If that’s not an issue, then yes you can put the old SIM in the new phone (assuming it fits). Your new phone will be locked to AT&T, so only an AT&T SIM will work in the new phone. Can I use my old SIM card in my new phone ATT? Many people wonder if you can really just switch SIM cards on an iPhone. What to Know Before You Switch SIM Cards on an iPhone. Can you just switch SIM cards in iPhones? Can you just switch SIM cards on AT&T phones?ĪT&T WirelessSM SIM Card Turn your device off. The good news is inserting any older SIM card into a phone will not harm the phone in any way or change any of the settings.
The best way to see if the SIM is active would be to insert it into a device which has a compatible SIM card slot. How do I know if my SIM card is activated? Push the SIM card tray back in until it clicks into place and is flush with the side of the device.
Remove or insert the SIM card from/into the SIM card tray. Remove or insert the SIM card tray by inserting a paper clip or SIM eject tool into the small hole on the right side of the device.
Choose Insert or remove SIM card and follow the steps. Scroll to Getting started and select Hardware & phone details. How do I know if my AT&T SIM card is activated? Tap OK on the alert that says you must approve the transfer on your previous iPhone. On your new iPhone, go to Settings > Cellular > Add Cellular Plan. How do I transfer my service to my new iPhone? On your new device: When To this device shows on your screen, select the button and follow the steps until you see a barcode reader. Select that button and follow the steps until you see a barcode. On your old device: From this device will appear on your screen. Follow the on-screen instructions to activate your device. Provide the wireless number and the billing or shipping ZIP code of the device. 
Go to the Activate your AT&T wireless device page. In regards to, how do I activate my AT&T SIM card? Wait while your computer detects and activates your iPhone: If you see an alert that shows “Set up as New” or “Restore from Backup,” it means your iPhone is activated. Still can’t make a call? Need more help? Call us at 866.895.1099.Īdditionally, how do I activate iPhone after setup? With the cable that came with your iPhone, connect your iPhone to your computer. Similarly, what number do I call to activate my ATT phone? Android phone or tablet If you still don’t have service, please call FirstNet Support 800.574.7000. To activate a new line of service or a replacement device, please go to the AT&T Activation site or call 866.895. Follow the prompts to complete your activation.Ĭonsidering this, do I need to call AT&T to activate new iPhone?. Select Activate your device for AT&T wireless device.
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