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This Free Heat Warning System Could Help You Prepare for Dangerous Summer Conditions

The risks of heat are only growing thanks to lasting heat waves, extreme nighttime temperatures and unusual humidity, like the current «corn sweat» in the Midwest.

A massive heat dome is gripping much of the US again this week, with the Midwest facing a brutal combination of scorching temperatures and stifling humidity due in part to so-called «corn sweat,» or the extra moisture crops release into the air. This added humidity is pushing heat indexes well above 100 degrees across parts of the Corn Belt and beyond, compounding the risks for millions under excessive heat warnings and advisories.

The extreme heat bearing down across the US this summer can have a serious impact on public health. Excess heat can exacerbate common health conditions, but it can also mess with your air conditioning, overheat phones and cause meltdowns for other tech. If you live in an area at risk for extreme heat, or know someone who does, you can sign up for a free alert system to help you prepare. The HeatRisk tool from the National Weather Service can send personalized warnings straight to your inbox, giving you advance notice when dangerously high temperatures are headed your way.

HeatRisk is free to use and you’ll want to keep tabs on it to avoid heat safety issues, such as heatstroke, dehydration or fatigue. Here’s how to use it and why you should. 

Read more: This CDC Tool Can Help You Track Heat Risks on Trips and in Your Area

What is NWS HeatRisk?

NWS HeatRisk is a clickable map of the US, which is used to forecast extreme heat and assess the impact of that weather on public health. You can click anywhere on the interactive map and pull up a seven-day forecast of risk assessments for any city, town or area. 

The threat assessment is built on a five-level system that’s color-coded for severity, with green representing little to no risk and magenta representing the highest risk. The map will display a seven-day forecast for anywhere in the country, along with the color of the health threat level.

The system also considers how unusual the heat is for your area, how long the heat is expected to last and how it could affect people who are more vulnerable, such as older adults, kids or outdoor workers.

Read more: Super Common Health Conditions Can Make a Heat Wave More Dangerous: Here’s How to Prepare

Threat colors

NWS HeatRisk has five levels, each with a different color that corresponds to the size of the health risk:

0: Green

According to the NWS tool, there’s little to no risk involved with the forecasted heat at the green level.

1: Yellow

At the yellow level, there’s a minor risk for people who are extremely sensitive to heat.

2: Orange

The orange level represents a moderate risk to the general public, with potential danger to health systems and heat-sensitive industries.

3: Red

Red means there’s a major risk to anyone without access to immediate cooling and hydration, with likely impacts to health systems and heat-sensitive industries.

4: Magenta

The most extreme level is magenta. It’s both a rare occurrence and one that’s of long duration, with no overnight relief and is likely to affect health systems, heat-sensitive industries and infrastructure.

How to sign up for heat risk alerts 

To get free heat warnings, go to Heat.gov, enter your ZIP code and sign up for email or text alerts. You’ll get daily updates when your area faces extreme heat levels that could pose a health risk. 

Signing up for alerts is a quick step that could help you plan ahead, from adjusting outdoor activities to checking on family or neighbors, or just opting to stay hydrated and inside.

Other ways to track heat risks

Similar to NWS HeatRisk, a tool from the US Centers for Disease Control and Prevention called the HeatRisk Dashboard gives you a seven-day forecast to assess the potential health impact from extreme heat. 

Data Explorer is another tool from the CDC’s Environmental Public Health Tracking Program, which offers further HeatRisk information and assessment resources for COVID-19 and other illnesses.

Read more: Here’s How to Keep Your Kitchen Cool (and Lower Your Energy Bill) During a Heat Wave

Why extreme heat warnings matter 

Summer 2025 has already been a scorcher in many parts of the country. It’s important to stay diligent since extreme heat is the deadliest weather hazard in the US, causing more deaths each year than hurricanes, floods or tornadoes. 

The risks of heat are only growing. Heat waves are lasting longer, nighttime temperatures are staying high and unusual humidity — like the current «corn sweat» in the Midwest — can make it even harder for your body to cool down.

Staying informed is one of the easiest ways to protect yourself and your loved ones. Along with signing up for alerts, the CDC recommends learning the signs of heat-related illnesses, drinking plenty of water and never leaving children or pets in cars.

For more ways to stay safe this summer, check out CNET’s guide to the best portable AC units, tips for cooling down this summer and how to make your home more heat-resilient.

Technologies

Back-to-School Deal: Tello’s Unlimited Plan Gets You Cell Service for $15 Per Month Your First 3 Months

Tello’s back-to-school deal lets you save big on cellphone service, but you have until Monday to take advantage of this discount.

The cost of every day basics continues to go up, but we take great pride in looking for ways to help you cut your expenses wherever you can. If you haven’t considered switching phone plans, maybe it’s time to do just that. Phone plans are a necessary line item on everyone’s budget, but switching to a cheaper one can help you save money every monty — which adds up over time.

If you’re looking to make a change, Tello is offering Unlimited phone plans for just $15 per month for your first three months this back-to-school season. You pay this as a $45 upfront payment rather than month to month, which may be preferable for some customers. After your initial three-month period on the Tello plan, the price reverts to the usual cost of $25 per month. But this deal is available only to new Tello customers until Monday.

Tello offers 5G and 4G LTE nationwide coverage so you can reliably get through phone calls or surf the internet. The plan includes unlimited data, 35GB of high-speed data, and free Wi-Fi and hotspot calling. US plans include free calls and texts to more than 60 countries, including Canada, India and Mexico. Data speeds slow down after you use your 35GB. Tello allows you to bring your own phone or lets you get a new one for a separate fee.

Hey, did you know? CNET Deals texts are free, easy and save you money.

If you’re looking for an even more budget-friendly plan, you can also consider their 2GB plans for $10 per month. Right now their 5GB plan is $10 for the first month and then just $14 per month. These have data limits, but they include unlimited talk and text. Once you select your plan, it will renew every 30 days unless you cancel or change it.

Looking for more ways to save on your phone plan but not sure if this deal is for you? Check out our list of the best cheap phone plans or best family plans so you can find exactly the plan you need.

Why this deal matters

At just $15 per month for three months (and $25 after this period), Tello’s Unlimited plan is one of the most budget-friendly deals available in the market right now and can save you hundreds over the year. This deal is available until Monday, and now is an excellent time to take advantage of it.

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Technologies

Pixel Watch 4 Features vs. Apple Watch Series 10: Google Came to Play!

Google’s latest watch takes a direct hit at Apple with a new AI health coach and advanced emergency connectivity. Find out how they stack up.

Google’s Pixel Watch 4 is the newest player on the smartwatch field and it’s not holding back. With a sleek design, AI-powered health coach, first-of-its-kind emergency satellite connectivity and improved battery life, it’s a major leap forward for a relative newcomer that’s been edging its way up the ranks to compete with the heavy hitters of the wearable world.

The Apple Watch Series 10, meanwhile, remains a benchmark in the category. While technically at a disadvantage being last year’s model, it holds its own with more than a decade of refinements and deep integration with the iPhone and Apple’s extensive health and fitness ecosystem. 

As smartwatches make the leap from wearable phone extensions to essential health and safety tools, these two flagships are redefining the category — especially with both companies controlling the full hardware and software experience on their respective platforms. And with Apple expected to debut its Series 11 in September, this face-off feels like just the opening move in what’s shaping up to be a high-stakes game of chess between two of the biggest names in tech. Here’s how the specs stack up on paper; we’ll conduct our full suite of tests for the full Pixel Watch 4 review. 

Pricing and availability

Being an older model, the Apple Watch Series 10 can be found for a discounted rate through third party sellers like Best Buy and Walmart, but the original price of $399 is technically higher than the base price of the $350 Pixel Watch 4. However, the larger-size versions have less of a price gap with the 45mm Wi-Fi version of the Series 10 costing $429 and the Pixel Watch 4 equivalent costing $400. And the Apple Watch is the only one that offers a higher-end titanium model that costs about $200 more than the base aluminum. Both watches are rated for 5ATM water resistance and have IP6X dust protection.

Design and display 

Both watches remain true to their original form factor and this category is more a matter of preference. The Pixel Watch 4 sticks with its signature circular design that looks closer to a traditional analog watch than the Apple Watch, with a bubble-like screen that curves outward for a sleek, all-display look. It comes in 41mm and 45mm sizes with silver, dark gray and gold aluminum finishes, plus interchangeable bands.

Apple, by contrast, hasn’t strayed from its signature rectangular shape since its launch. It’s more «tech» looking than the Pixel Watch, but it’s also slightly more practical for navigating apps and notifications. The Series 10 also has minimal bezels with a screen that expands into the thin frame and comes in a 42mm and 46mm version. The Apple Watch has a slightly higher pixel density for better image quality but the Pixel 4 is brighter with up to 3,000 nits peak brightness compared to the Apple Watch’s 2,000 nits.  

Performance, software and AI

Under the hood, both watches run the latest versions of their respective software: WatchOS 10 for Apple and Wear OS 6 for the Pixel. Apple offers the usual tight integration with the iPhone, while Google leans on its Fitbit acquisition for health tracking and now its AI expertise with the built-in Gemini assistant.

And this is where the Apple Watch starts to lose its footing. Google’s Gemini voice assistant handles back-to-back commands, summarizes information from your apps and responds conversationally without shuttling you out to a web link — something Siri still struggles to match. Apple’s assistant remains more limited, often requiring repeat commands and leaning on your iPhone for anything beyond the basics. Even a cautious AI user like myself can’t help notice how Gemini’s added capabilities feel genuinely useful on the wrist, cutting down on screen taps and making it easier to get more done on the go.

Health and fitness features

This is another area where Google’s AI could give the Pixel Watch 4 an extra edge. Both watches set the standard in health and fitness features — Apple because of its longstanding commitment to health and fitness, and Pixel through its integration with Fitbit. Their metrics are accurate and easy to make sense of in their respective apps. But the Pixel 4 just stepped it up with a concierge style AI health coach (coming in October) that can help you interpret your health data and give personalized recommendations: everything from whether to rest or exercise on any given day, to how to improve sleep quality. Apple’s Workout Buddy, coming in watchOS 26, offers live feedback on a handful of workouts but isn’t as far along in pulling together a complete picture of your health data (at least not yet). The caveat, however, is that Google’s coach will require a Fitbit Premium subscription ($10/month after a trial), while Apple’s AI fitness tool is free.

Emergency features

Beyond health tracking, both watches add an extra layer of protection with a range of emergency tools, including fall and crash detection, workout check-ins and Emergency SOS. The Apple Watch leans more on proactive health alerts, like warnings for irregular heart rhythm and potential sleep apnea. 

But the Pixel Watch 4 just boosted its emergency features by adding satellite connectivity. This means you can send a message for help even without a phone or cell service. The Apple Watch, by comparison, still relies on the iPhone or needs network coverage for models that are cellular-enabled to make an emergency call.

Battery and charging

On paper the Series 10 promises 18 hours of heavy use, though in our testing it’s consistently gotten closer to 26 to 30 hours with the always-on display active. Google claims 30 to 40 hours on the Pixel Watch 4 depending on size, giving it a slight edge, but it’s hard to pass judgment without our real world tests.

Charging speed is another strong point for both watches with quick charge capabilities, although the Pixel Watch 4 is still faster when you need a quick top-up. It reaches 50% in just 15 minutes and a full charge in an hour. The Series 10 also takes an hour to reach a full charge, but hits 80% in 40 minutes.

Google has also made the Pixel Watch 4’s battery and display easier to replace for repairs, a big step forward for long-term usability, while Apple hasn’t emphasized the same level of repairability on the Series 10.

Bottom line 

If you’re all-in on Apple, the Series 10 still delivers everything you need in a smartwatch. But for Android users (or anyone curious about AI on the wrist) the Pixel Watch 4 shows Google is serious about challenging Apple’s dominance.

Pixel Watch 4 vs. Apple Watch Series 10: Specs at a glance

Pixel Watch 4 Apple Watch Series 10
Design & sizes Round, 41mm & 45mm Square, 42mm, 46mm
Display AMOLED LTPO, 320 ppi LTPO3 OLED, 446 x 374 ppi
Thickness & weight 12.3mm; 31–36.7g 9.7mm; 30-41.7g (46mm titanium model)
Material & finish Aluminum case: Silver, Champagne gold, Satin Moonstone or Matte black finish Aluminum: Jet black, Rose gold or Silver finish; Titanium: Slate, Gold or Natural finish
Durability 5ATM water + IP68 (dust) 5ATM Water + IP6X (dust)
Battery life 30–40 hrs (always-on) + quick charge dock: 50% in 15min, 100% in 60 min 24-30 (always-on) + Fast charge: 80% in 30 min, 100% in 60 min
Sensors ECG, SpO₂, heart rate, skin temp, loss of pulse detection ECG, heart rate, skin temp, depth gauge, SpO2, Noise monitoring
Emergency features Satellite SOS, Safety Check, Safety Signal, fall & crash detection Emergency SOS, Fall detection, Crash detection, Check in and Backtrack
AI & coaching Gemini voice assistant; Fitbit AI health coach (via Premium) Siri (voice assistant); Workout Buddy
Processor Qualcomm Snapdragon W5 Gen 2, Cortex-M55 co-processor S10 SiP with 64-bit dual-core processor, W3 Apple wireless chip
RAM/Storage 2GB, 32GB (storage) 64GB (storage)
Payments Google Wallet Apple Pay
Price (US) $350–$500 $399-$750 (titanium)

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Technologies

Say Goodbye to Awful Cell Signal With These 10 Simple Fixes

These quick tricks can help you get better reception almost instantly.

Summer road trips are all about open roads, good company, and spontaneous detours. That is, until your phone loses service and the whole plan comes to a screeching halt. Whether it’s your GPS freezing mid-route, your music app buffering endlessly, or being unable to call for roadside help, poor cell reception can turn a carefree adventure into a frustrating mess. These dead zones tend to show up in the worst spots: backroads, mountain passes, or just that one stretch of highway where nothing seems to work.

Fortunately, you don’t need a new phone or a major tech upgrade to fix spotty service. There are several simple tricks you can try to get better signal on the go. From changing your network settings to repositioning your phone in the car for better line-of-sight, these small adjustments can make a noticeable difference. Whether you’re driving across state lines or just heading out for the weekend, these tips can help you stay connected and keep your trip running smoothly.

Whether you’re doing some routine phone maintenance or you’re stuck in an emergency, there are multiple ways to improve your reception on an iPhone or Android phone, no matter what type of phone plan you’re on. It might even come down to something as simple as toggling Airplane mode. 

To go from dropped calls to full bars, here’s what you need to know. For more on iPhone and iOS, check out everything Apple announced at WWDC 2025.

Note: Although software across different iPhone models is relatively the same, Samsung Galaxy, Google Pixel and other Android phones may have different software versions, so certain settings and where they are located might differ depending on device.

For more, check out how you can use Google Maps when you’re offline and how you can maybe fix your internet when it’s down.

To improve your cellphone service, try these steps first

The settings on your phone can help you get better cell service, but there are other tricks for improving your reception without even touching your phone’s software.

  • Move yourself so that there are no obstructions between your phone and any cell towers outside. That might involve stepping away from metal objects or concrete walls, which both kill reception. Instead, get to a window or go outside if possible.
  • Remove your phone case. It doesn’t hurt to remove whatever case you have on your phone, especially if it’s thick, so that the phone’s antenna isn’t blocked by anything and can get a better signal.
  • Make sure your phone is charged. Searching for and connecting to a stronger signal drains power, so if your phone battery is already low on charge, you may have a difficult time getting good service.

Always start by turning Airplane mode on and off

Turning your phone’s connection off and then back on is the quickest and easiest way to try and fix your signal woes. If you’re moving around from one location to another, toggling Airplane mode restarts the Wi-Fi, Bluetooth and cellular network modems, which forces them to find the best signal in the area.

Android: Swipe down from the top of your screen — to access the Quick Settings panel — and then tap the Airplane mode icon. Wait for your phone to completely disconnect from its Wi-Fi and cellular connections. It doesn’t happen instantly, so give it a good 15 seconds before you tap on the Airplane mode icon again.

iPhone: On the iPhone, you can access Airplane mode from the Control Center, but that varies depending on which iPhone model you have. On the iPhone X and later, swipe down from the top-right corner to access the Control Center. On older iPhone models, swipe up from the bottom of the screen. Then tap the Airplane mode icon, which will turn orange when it’s enabled. Again, wait up to 15 seconds before turning it off.

If Airplane mode doesn’t work, restart your phone

Our phones are miniature computers, and just like computers, sometimes you can fix issues like network connection by simply restarting them.

Android: Hold down the power button, or the power button and the volume down key (depending on your Android phone), until the on-screen menu shows up, and then tap Restart. If your phone doesn’t offer a restart option, you can simply tap Power Off to shut down your device, and then boot it back up with the power button.

iPhone: On the iPhone X and older models, hold down the sleep/wake button and either one of the volume buttons and then swipe right on the power slider to turn off the device. Wait until it fully turns off, then press down on the sleep/wake button to turn it back on. 

Alternatively, you can do a force reset on your iPhone: Press the volume up button, followed by the volume down button and then press and hold the side button. Keep holding it in, after your phone’s screen goes black and until you see the Apple logo appear again. 

If your iPhone has a home button, hold down the sleep/wake button until the power slider is displayed and then drag the slider to the right. Once the device is turned off, press and hold the sleep/wake button until you see the Apple logo. 

Older phone? Take your SIM card out

Another troubleshooting step that might help is to remove your SIM card, if your phone has one, and then place it back in with the phone turned on. If the SIM card is dirty, clean it. If it has any physical defects, you may need to replace it.

You’ll need a SIM card tool — usually included in your phone’s box — or an unfolded paper clip or sewing needle to get the SIM tray out of your phone.

All phones: Remove the SIM card, check to see if it’s damaged and positioned in the SIM tray correctly, then put it back in your phone.

eSIM: For phones with an eSIM — that is, an embedded electronic SIM in your phone — there’s nothing for you to remove. The best you can do is restart your phone.

Check your carrier settings (and update your software)

Mobile carriers frequently send out carrier settings updates to help improve connectivity for calls, data and messages on their network. Although this feature is available on all iPhone models, it’s not universal on Android, so you might not find carrier settings if you don’t have a supported phone.

iPhone: Carrier updates should just appear, and you can update from the pop-up message that appears. To force your iPhone to check for a carrier settings update, go to Settings > General > About on your phone. If an update is available, you’ll be prompted to install it.

Android: As mentioned before, not all Android phones have carrier settings, so you’ll have to open the Settings app and type in «carrier settings» to find any possible updates. On supported Pixels, go to Settings > Network & internet > Internet, tap the gear next to your carrier name and then tap Carrier settings versions.

Reset your phone’s network settings

Sometimes all you need is a clean slate to fix an annoying connectivity issue. Refreshing your phone’s network settings is one way to do that. But be forewarned, resetting your network settings will also reset any saved Wi-Fi passwords, VPN connections and custom APN settings for those on carriers that require additional setup.

Android: In the Settings app, search for «reset» or more specifically «reset network settings» and tap on the setting. On the Pixel, the setting is called Reset Wi-Fi, mobile & Bluetooth. After you reset your network settings, remember to reconnect your phone to your home and work Wi-Fi networks.

iPhone: Go to Settings > Transfer or Reset iPhone > Reset > Reset Network settings. The next page will warn you that resetting your network settings will reset your settings for Wi-Fi, mobile data and Bluetooth. Tap Reset Network Settings and your phone will restart.

Contact your phone carrier

Sometimes unexpected signal issues can be traced back to problems with your wireless carrier. A cell tower could be down, or the tower’s fiber optic cable could have been cut, causing an outage.

For consistent problems connecting to or staying connected to a cellular or data network, it’s possible your carrier’s coverage doesn’t extend well into your neighborhood. 

Other times, a newfound signal issue can be due to a defect with your phone or a SIM card that’s gone bad. Contacting your carrier to begin troubleshooting after you’ve tried these fixes is the next best step to resolving your spotty signal.

If all else fails, try a signal booster to improve cell reception

If after going through all of our troubleshooting steps, including talking to your carrier to go over your options, you’re still struggling to keep a good signal — try a booster. A signal booster receives the same cellular signal your carrier uses, then amplifies it just enough to provide coverage in a room or your entire house. 

The big downside here is the cost. Wilson has three different boosters designed for home use, ranging in price from $349 for single room coverage to $999 to cover your entire home. To be clear, we haven’t specifically tested these models. Wilson offers a 30-day money-back guarantee and a two-year warranty should you have any trouble with its products. 

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