Trade-In Checklist

Get your trade-in right the first time — know what T-Mobile checks before you hand over your old phone.

💡
Trade-ins can unlock hundreds of dollars in credits — but if your device fails inspection, T-Mobile will either reject it or move it to a lower-value tier. Taking 10 minutes to prepare can save you from a nasty surprise.

The 3 Things That Get Trade-Ins Rejected

T-Mobile physically inspects every trade-in. Your device must meet all three of these requirements — missing any one of them can drop your credit tier or void the trade-in entirely.

1

No Screen Damage

The screen must be fully intact — no cracks, chips, shattered glass, or dead pixels. Even a small crack in a corner counts as damage. The touchscreen must also be fully responsive.
▶My screen has a tiny hairline crack. Will it still pass?
Unlikely. T-Mobile's inspection looks for any crack, not just major breaks. A hairline crack will typically place your device in a lower condition tier or cause it to be rejected. If you're unsure, check T-Mobile's trade-in value estimator with "cracked screen" selected — it will show the adjusted value.
▶What about screen burn-in or discoloration?
Yes, this counts as damage too. Permanent ghosting, yellow spots, or significant discoloration will affect your trade-in value. A light amount of temporary image retention typically won't, but be honest about it during the estimate.
▶My phone has a screen protector hiding a crack. What happens if T-Mobile finds it?
They will find it. Technicians remove screen protectors as part of the inspection. If a crack is discovered that you didn't disclose, your trade-in credit may be adjusted or the trade-in may be rejected outright.
▶Does the back glass matter?
Usually yes, but it's less critical than the screen. A cracked back often puts the device into a "fair" or "poor" condition tier rather than causing rejection. Check T-Mobile's value estimator for the specific impact on your model.
2

No Water Damage

Your device must show no signs of liquid damage. T-Mobile checks the internal liquid damage indicators (LDIs) — tiny strips inside the device that permanently change color when exposed to moisture. A device that still powers on can still fail this check.
▶My phone got wet once but it's been working fine ever since. Is it okay?
If it was a modern phone with an IP rating (e.g., IP67 or IP68), and you didn't submerge it beyond its rated depth or duration, it's probably fine. But the LDI strips may still have changed color even if the phone survived. You can check some models yourself — look for a small sticker in the SIM card tray. If it's pink or red instead of white, moisture damage has been recorded.
▶My phone is IP68 rated. Doesn't that mean water damage can't happen?
IP ratings mean the phone is resistant to water, not immune. Submersion beyond the rated depth (usually 1.5m) or duration (30 minutes), exposure to salt water, or damage to the seals can all void the waterproofing and still trigger an LDI. IP ratings also degrade over time.
▶I accidentally dropped it in water but dried it out with rice. Will it pass?
Drying the phone out does not reset the LDI strips. Once moisture triggers them, they stay triggered permanently. The phone may work perfectly, but it will likely still be flagged during inspection.
▶Can I check for water damage before I trade in?
Yes. On most phones, open the SIM tray and look at the small sticker inside. White or silver = no damage recorded. Pink, red, or orange = moisture detected. Apple iPhones have LDIs in the headphone jack (older models) or SIM tray area.
3

Anti-Theft Features Must Be Disabled

This is the most commonly missed step. Your phone must be completely wiped and all account locks removed before you hand it in. If Find My (iPhone), Google's Find My Device, or Samsung's Find My Mobile is still active, T-Mobile cannot wipe or resell the device — and your trade-in will be rejected.
▶What exactly do I need to disable before trading in?
  • iPhone: Sign out of iCloud (Settings → your name → Sign Out). This automatically disables Activation Lock. Then do a factory reset (Settings → General → Transfer or Reset iPhone → Erase All Content and Settings).
  • Android (Google): Remove your Google account (Settings → Accounts → Google → Remove account) or do a factory reset — the reset process will prompt you to confirm your Google account first, which removes the lock.
  • Samsung: Sign out of your Samsung account and disable Find My Mobile (Settings → Biometrics and security → Find My Mobile) before resetting.
▶What is Activation Lock (iPhone) and why does it matter?
Activation Lock ties your iPhone to your Apple ID. Even after a factory reset, anyone who powers on the device will be asked to enter your Apple ID and password. T-Mobile cannot sell or provision a phone that's locked this way. If you forget to remove it, you'll need your Apple ID credentials to unlock it remotely via icloud.com — which you may not be able to do after the fact.
▶What is Factory Reset Protection (FRP) on Android?
FRP is Android's version of Activation Lock. After a factory reset, the phone will require the Google account that was previously signed in. To avoid triggering FRP, remove your Google account from the device before resetting, or sign in with your Google account during the reset process to confirm it's yours.
▶I already handed in my phone and forgot to remove Find My. What now?
Act quickly. Contact T-Mobile and request to put the trade-in on hold. Then sign in to icloud.com (iPhone) or myaccount.google.com (Android) → Find My Device and remove the device from your account remotely. T-Mobile should be able to resume the trade-in once the lock is cleared.
▶Do I need to back up my data first?
Yes — back up everything you want to keep before you factory reset. Once the device is wiped, your data is gone. Use iCloud Backup (iPhone) or Google One / Samsung Cloud backup, and verify the backup is complete before resetting.

How Trade-In Credits Actually Work

There are two ways T-Mobile can pay out your trade-in value. Most promotional deals use bill credits, which means you won't see the savings all at once.

⚠️
Monthly bill credits are not instant cash. If a deal says "$800 off via bill credits over 24 months," that means ~$33/month off your bill for 2 years. You must stay on the qualifying plan for the full term to receive all credits. Leaving early forfeits remaining credits.

Monthly Bill Credits (most common)

The trade-in value is applied as a monthly discount on your bill, spread over 24 months (sometimes 36).

  • You must keep the qualifying plan for the entire term
  • Credits stop if you change plans or cancel
  • Forfeited credits are not refunded
  • Net cost of the new phone = purchase price minus total credits received

Upfront Trade-In Value (instant)

Some deals give you the trade-in value immediately as a lump sum — either as a credit on your first bill or a deduction from the device purchase price.

  • You may still pay monthly installments on the new device
  • The trade-in value reduces what you owe up front
  • No term commitment risk — credits aren't forfeited if you leave
  • Less common for big promotional deals
📱
Example: You trade in your old phone for $800 off a $1,000 new phone via monthly bill credits over 24 months. You still pay the full $1,000 purchase price (or ~$41.67/mo installments), but receive ~$33.33/mo back on your bill. You need to stay for all 24 months to break even. If you leave after 12 months, you've only received $400 in credits — meaning the new phone effectively cost you $600 instead of $200.

Quick Checklist Before You Go

  • Screen is crack-free and fully responsive
  • No signs of water damage (check the SIM tray LDI sticker)
  • Find My / Find My Device / Find My Mobile is disabled
  • Device is factory reset and signed out of all accounts
  • You have a backup of everything you need
  • You understand whether your deal pays out monthly or upfront
  • You know how long you need to stay on your plan to receive all credits
Find Deals with Trade-InBrowse All Promotions