Before You Trade In Your Old Phone, Do These Things First

Why Preparation Matters Before a Trade-In

Trading in or selling your old phone is one of the most efficient ways to offset the cost of a new device. But skip the prep steps, and you risk losing irreplaceable photos, leaving personal accounts exposed to a stranger, or forfeiting trade-in credit because of a preventable issue like an active activation lock.

This checklist walks you through everything to do — in the right order — before your old phone leaves your hands. Whether you're trading through a carrier, selling on a secondhand marketplace, or handing it to a family member, the same steps apply. Once you're done here, you'll be ready to move on to setting up your new Android phone the right way.

Tools and Accounts You'll Need Handy

Before you start working through the checklist, gather a few things. Having these ready prevents interruptions mid-process — especially important when you're mid-backup or mid-sign-out and time-sensitive operations are running.

If you're also thinking about changes to your broader tech setup — like switching carriers after the trade-in — the same careful, step-by-step mindset applies. See our guide on switching internet providers without losing service or paying unnecessary fees for a comparable approach.

Common Mistakes That Cost People Money or Privacy

The most common and costly mistakes people make aren't about skipping obscure steps — they're about skipping obvious ones in the wrong order. Doing a factory reset before backing up data is the single most frequent error. Equally problematic is forgetting to disable Find My iPhone or Find My Device before resetting; this leaves activation lock active, making the phone essentially a brick for whoever receives it next.

Another overlooked issue: leaving two-factor authentication (2FA) tied to the old phone number or device. If your new phone uses 2FA codes sent to the old number, and you've already transferred your SIM, you may get locked out of critical accounts. Review your 2FA settings across banking, email, and social media accounts before the trade-in, not after.

It's also worth knowing that your phone's default settings may have been working against you all along — reviewing them now is a good reminder of what synced data and permissions you've accumulated over time.