Learn how to turn your device off and back on again. Restarting your device is often the first step when troubleshooting a device issue.

Restarting your phone

Get smartphone, tablet & mobile device support from AT&T. Select the brand of your phone, table, or mobile device from the list of popular brands.

AT&T Device Support – Select a Phone, Tablet, or Device Brand

AT&T Device, Phone & Tablet Support – AT&T Official Site

Galaxy S21 5G

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