Samsung · 2021
Galaxy S21 recovery guides
Owner recovery for the Samsung Galaxy S21 using official Samsung and carrier tools. Forgotten passcode, account lockout, carrier unlock, and eSIM.
- BrandSamsung
- SystemAndroid
- Released2021
- Model numbersSM-G991B, SM-G991U
Owner-authorized use only. These steps do not remove Activation Lock, Google Factory Reset Protection, or carrier locks tied to someone else's account.
Recovery guides for the Galaxy S21
- What is actually recoverable — the full decision treeOne page that tells you whether to erase, whether to wait, and what you will lose.Intermediate
- I forgot my phone's passcodeWhat actually happens next, what you lose, and why nobody can 'crack' it for you.Beginner
- Back up first — the step people skip and regretWhat a backup does and does not contain, and how to make one while you still can.Beginner
- Getting your phone unlocked from a carrierWhat a network unlock is, who can grant it, and the conditions that decide whether you qualify.Beginner
- Carrier unlock escalation playbookWhen the carrier says no or goes silent: the order of moves that gets a decision.Advanced
- Check an IMEI before you hand over moneyTwo minutes that prevents the single most expensive mistake on this site.Beginner
- You bought a phone and it's locked to someone elseThe one situation no technical step fixes, and what to do about it instead.Beginner
- The phone is managed by a workplace or schoolHow to tell, and why this one is not yours to unlock even if you paid for it.Beginner
- SIM, eSIM, and keeping your phone numberHow your number moves between phones, and how to protect it from being taken.Beginner
- Building a proof-of-ownership case that actually succeedsThe exact records that make a carrier, a manufacturer, or a platform treat you as the owner.Advanced
- Making sure this never happens againThe ten-minute setup that turns a future lockout into a minor inconvenience.Beginner
- Android's Factory Reset Protection and your Google AccountWhy a wiped Android still asks for a Google Account, and how to get back into yours.Intermediate
- Google Account recovery playbookThe recovery form rewards specific answers. Here is how to give them.Advanced
- Android hardware recovery: key combinations by brandThe exact button sequences to reach recovery, fastboot, or a factory reset on every major Android brand.Intermediate
- Locked out of a Samsung GalaxySamsung has a remote unlock most owners never hear about, plus a second account layer on top of Google's.Beginner
Wrong model, or need a hand?
Ask on the board or request help with your exact situation.