Bring your phone. Bring your tablet.
Refer to the manufacturer's website to verify your unlocked device works with a SIM card on an AT&T GSM network frequency:
- • 3G UMTS network 850/1900MHz bands
- • 4G LTE network AWS / 700 / 850 / 1900MHz bands
Phones from Sprint® are not compatible at this time.
Select a SIM and an
AT&T Mobile Share® Value Plan
Share data on up to 10 devices with Unlimited Talk & Text and no annual contract!
Current customers can add to their AT&T Mobile Share Plan or add a new line to their FamilyTalk® plan.
Activate your device
Your new AT&T SIM card arrives ready to use. All you have to do is insert it in your phone or tablet and you're ready to go.
Get more information. See Quick facts below >
Select a SIM for your device
Don't see your device type? Stop by an AT&T store near you.
New lower rates with Mobile Share® Value Plan
Save up to $25/mo. per smartphone. Bring your tablet-$10/mo.
- No credit check, no annual contract
- Nationwide service, connect virtually anywhere
- Unlimited Talk and Messaging
- Fast, 4G LTE speeds
- Award-winning customer service
A SIM (subscriber identification module) card is embedded with a specially programmed microchip that inserts into a compatible Global System for Mobile Communications (GSM) mobile device. The SIM card encrypts transmissions and identifies the user to the mobile network. Without a SIM card inserted into the mobile equipment, only emergency calls to 911 can be made.
SIM cards allow users to easily switch their account information between other compatible GSM devices for immediate use. The SIM card also acts as a removable storage card within the mobile device. SIM cards contain up to 128KB of available memory for storing contact names and phone numbers as well as text messages. This allows for users to easily update a new mobile device with their existing contacts.
To find out if your device uses a SIM card, a micro-SIM card or a nano-SIM card, check your device. All versions of the iPhone® 5 use uses a nano-SIM card. iPhone 4/4S uses a micro-SIM. Most 4G LTE Android™ phones use a micro-SIM but not all, so be sure to check the make/model of the device and size of the SIM card (usually located under the battery).
Your new SIM card will be sent to you by mail. Place the new SIM into your device. Activate your AT&T wireless device online by visiting the Activate Your Phone page on att.com. If you experience issues activating your device online, please call 866-391-0749.
GSM (Global System for Mobile communications) is the most broadly deployed standard for mobile devices in the world. GSM devices operate on international frequencies. These can include tri-band devices, which operate on three of the four GSM frequencies, and quad-band devices, which operate on all four of the GSM frequencies.
Devices from many manufacturers (Apple®, HTC, Samsung, etc.) will work on our network. To find out here if your GSM device is compatible with the AT&T network, check your device.
Once you have an AT&T SIM and have activated the AT&T SIM card, you can put it in any compatible, unlocked GSM device you choose.
Yes, you add a line by logging into your account and adding a SIM, plan, and services.
When you purchase a SIM card, you must also purchase a new rate plan and in some cases a data plan. A long-term service commitment is not required. All smartphones require data. If you do not add a data plan to a smartphone, AT&T will add it for you upon activation.
Mobile Share Value plans offer the following benefits:
- More value:
- You can save more on 6GB and higher data plans compared with regular Mobile Share plans.
- You can save on devices with the No Annual Service Contract option or with AT&T Next installment plans.
- More flexibility:
- You have choices for how to purchase a smartphone or basic messaging device:
- Sign up for a standard two-year agreement for $40/mo.
- Choose the No Annual Service Contract option for $25/mo.
- Bring your own device.
- Purchase with the AT&T Next Installment Plan (either AT&T Next 12 or AT&T Next 18).
- Purchase a device out of contract.
- Purchase at full retail price.
If you purchase a device with AT&T Next or the No Annual Service Contract option, no service contract is required. AT&T Next does require that you sign an installment agreement for device charges. You’re also required to agree to the Wireless Customer Agreement for the terms of service not associated with a time commitment.
All device selections on Mobile Share Value plans will be billed at $40 per month. Therefore, a $15 Mobile Share Value savings credit will be applied to your bill. The bill will show the $40 monthly cost (applicable to all device selections on a Mobile Share Value plan) with a $15 Mobile Share Value savings credit underneath.
No. Like current Mobile Share plans, Mobile Share Value plans do not require a smartphone on your account.