Most homes have a drawer full of old phones, cables and devices that might be useful someday. In reality, they lose value there, keep personal data around and can become risky when batteries age. Set aside 30 minutes and deal with them properly.
Gather and sort first
Put old phones, tablets, chargers, cases, SIM tools and memory cards in one place. Sort them into three piles: usable, broken and unsure. That turns a messy drawer into a clear decision list.
Power on each device only if it looks safe. If the battery is swollen, the phone gets hot or the casing is damaged, do not charge it. Keep it separate and ask your local recycling point how to dispose of it safely.
Back up data and sign out
Check photos, contacts, notes, downloads, password managers, banking apps and especially two-factor authentication apps. Save anything you still need before deleting or resetting anything. On iPhone and Android, also check cloud backups so you know the important data is really stored elsewhere.
Then sign out of Apple ID, Google Account, Samsung account and any other manufacturer accounts. Disable tracking and activation-lock features such as Find My or Find My Device. This matters because a reset phone can still be locked for the next person if you skip this step.
Reset it properly
Remove the SIM card and any memory card. Unpair connected devices if the phone is still linked to watches, cars or headphones. Then use the system settings to erase all content and restore factory settings.
If you plan to sell or give away the phone, start it once after the reset until the welcome screen appears. If no account lock appears, it is basically ready. Avoid storing it at 100 percent battery; a medium charge level is better for storage.
Reuse, pass on or recycle
A working old phone can still serve as a backup phone, child device, music player, navigation device, smart-home display or emergency handset. If you do not need it, sell it, give it away or donate it through a reliable channel.
Broken devices do not belong in household waste. Retailers, municipalities, recycling centres and collection boxes often accept e-waste for free. That way valuable metals and materials go back into circulation instead of sitting in your drawer for years.
A simple rule for next time
When a new phone arrives, schedule a task for the old one immediately: check backup, sign out, reset, decide. That prevents the drawer from filling up again.