Should I buy a used Pixel 5 as a backup phone?

Probably not as your main backup phone in 2026 unless it is very cheap and in excellent condition. A used Pixel 5 can still be a nice lightweight spare for calls, texts, maps, hotspot use, 2FA apps, and occasional photos, but its biggest downside is age: battery wear and expired software/security support make it a weaker buy now.

Buy it only if all of these are true:

1. The price is low enough that you would not mind replacing it soon.
2. The battery health is acceptable or the seller accepts returns.
3. It is unlocked and supports your carrier’s bands/VoLTE.
4. The screen, USB-C port, speakers, cameras, Wi‑Fi, Bluetooth, and fingerprint reader all work.
5. It has no Google account lock, financing lock, blacklisting, or carrier lock.

My practical recommendation: if you just need a drawer phone for emergencies, travel, or temporary use, a used Pixel 5 is okay. If you want a backup you can trust for banking, work, travel, or several more years, buy a newer used Pixel instead.