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Is AT&T GSM or CDMA?

Can I use my AT&T phone with another carrier?

Is AT&T a CDMA or GSM network?

AT&T is a GSM network carrier and works with GSM cell phones.

GSM stands for Global System for Mobile Communications. GSM and CDMA are the 2 types of 3G networks that cell phone carriers use to provide your service.

Find Cheap Cell Phone Plans in Your Area

In the past, you couldn't use a CDMA network's phone on the GSM network and vice versa. However, most newer smartphones can operate on either type of service.

Some older phones can as well, just make sure you research your specific device to find out whether it's compatible with both before buying a cell phone plan.

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AT&T GSM network carriers

If you're shopping around for a new carrier, consider MVNOs - Mobile Virtual Network Operators. These are smaller mobile providers that rent space on the same networks the big guys use and then sell it to you at a lower price.

There are plenty of great AT&T MVNOs to choose from, such as PureTalk, h20 Wireless and Red Pocket which means you can get AT&T service without paying AT&T prices.

AT&T vs h2o Wireless Plan Comparison

Keep your AT&T phone, number & coverage: Save $562 per year

CarrierNetwork Coverage4G LTE DataPriceAnnual Cost
AT&TAT&T 4G LTEUnltd*$75/mo$900/yr
h2o WirelessAT&T 4G LTE6GB$30/mo$338/yr
*Don't waste money on unlimited data - Avg. data usage is only 3-5GBSavings$45/mo$562/yr

AT&T GSM low cost carrier benefits

  • Get the same great service: You get cell phone service on the very same networks the major providers use.
  • Save over half: MVNO plans typically save you 50% or more over the big four carriers.
  • Custom plans: Only pay for what you actually need and use.
  • No contracts or credit checks: No commitment and everyone is welcome!
  • Keep your phone: Most MVNOs are BYOP (bring your own phone) - keep your device and your number.

AT&T GSM carrier plans

CarrierMins/TextsDataPrice
Pure TalkUnltd/Unltd2GB$15** 25% Off for 3 Months
Red Pocket MobileUnltd/Unltd3GB$5** $14 Off in 1st Month
Unreal MobileUnltd/Unltd8GB$20** $60 for 3 months
h2o WirelessUnltd/UnltdUnltd$37.50** 25% Off for 3 Months
Good2Go MobileUnltd/Unltd0GB$10

AT&T GSM unlocked phones

You can also save a bundle on your smartphone by purchasing a used or refurbished GSM phone to go with your new plan.

Bring your own AT&T GSM phone to a cheaper carrier

  • Save half or more off retail: For less than half the price you can get a smartphone model just a year or two old.
  • It's a great value: Most model years only see minor tweaks to existing smartphone designs. Get a steal of a deal without sacrificing the features you love.
  • Keep your freedom: Buying your phone outright means you can leave your carrier any time you want - like when you find a cheaper cell phone plan.

AT&T GSM companies list

MVNONetwork(s)
Pure TalkAT&T
h2o WirelessAT&T
Red Pocket MobileAT&T, Sprint, T-Mobile, Verizon
Straight TalkAT&T, Sprint, T-Mobile, Verizon
TracFoneAT&T, Sprint, T-Mobile, Verizon
Consumer CellularAT&T, T-Mobile
CricketAT&T
FreedomPopAT&T, Sprint
FreeUP MobileAT&T
Net10AT&T, T-Mobile, Sprint, Verizon
Rob Webber
Rob Webber

Rob has 15+ years experience in the US and UK running price comparison sites for cell phone plans, smartphone deals, TV, and internet. He loves thinking outside of the box to build tools that empower consumers to make more informed decisions.

AT&T MVNO FAQs

How do I switch to AT&T?

Switching to AT&T is smart, quick and simple. You don't have to buy a new phone, since you can bring your device to AT&T. You can keep your old number. All you need to do is order a AT&T SIM card and once you have that, you can switch your phone service in as little as 2-3 minutes.

Does AT&T have network coverage in my area?

AT&T is powered by AT&T, meaning you get the same nationwide 4G LTE coverage as you would if you signed up to AT&T directly.

Can I keep my phone number when I switch to AT&T?

Yes! It's easy to port your existing phone number to AT&T during the activation process.

Can I bring my phone to AT&T?

Yes! Most unlocked smartphones that have a SIM card slot will work with AT&T. If your phone is locked to a carrier you will need to contact your existing carrier to get it unlocked.

Is my device compatible with AT&T?

You can check your devices compatibility on the AT&T website before you signup.

Is there a contract or credit check with AT&T?

No. AT&T works on a prepaid month-to-month basis, meaning there is no credit check or commitment so you can switch carriers as often as you like.

Does AT&T offer unlimited data plans?

Most people don't need unlimited data, the average person only used 2-5GB per month. Typically, it's better to choose a customized AT&T plan and only pay for the data you actually use.

Does AT&T offer family plans?

AT&T plans are already extremely low-cost, so they do not offer further discounts for families.

How does AT&T billing work?

AT&T plans are prepaid with no contract. This means that you pay for 30 days when your plan starts, not afterwards. AT&T allows AutoPay to ensure you automatically renew your plan every 30 days.

Can I share my AT&T plan across multiple devices?

Additional lines can be added for $20 per line on all of Reach’s shared data plans. Up to 4 lines can exist on an account.

Does AT&T allow tethering?

Yes, AT&T allows tethering but it may depend on the plan you select, so you will need to check on the AT&T website.

Does AT&T offer international calling?

Yes, AT&T includes calls to international countries, more information can be found on the AT&T website before you sign up.

Does AT&T have a refund policy?

AT&T offer a refund within 7 days if you are not satisfied with the service. Be sure to check the full details on the AT&T website.

Who should switch to AT&T?

AT&T are perfect for anyone that is looking to save money on their cell phone plan, without compromising on coverage. Whether you're a family, senior, student, cord cutter, business owner or just a savvy consumer, there's a customized plan suitable for everyone.

AT&T Network Specs

Network:AT&T
Technology:GSM
3G Bands:850, 1900MHz
4G LTE Bands:1900, 1700/2100, 850, 700, 2300Mhz
Bring Your Phone:Yes
Keep Your Number:Yes
Contract:No - Postpaid
Credit Check:Yes

AT&T Company Info

Founded:1882
Headquarters:208 S. Akard St. Dallas, TX 75202
Employees:273,000
Customer Service:(800) 331-0500
Website:Go to Website
Wikipedia:Go to Wikipedia
Facebook:Go to Facebook
Twitter:Go to Twitter
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