Last updated: August 2026

The A31 dates from 2020 and is past its software support window — which makes it a good moment to ask the question people rarely ask directly: when is upgrading actually worth the money?

The four genuine reasons to upgrade

  1. Security updates have stopped. The only reason that is really about risk rather than preference — and it applies to the A31 now.
  2. The battery no longer lasts a day and a replacement has not fixed it.
  3. Storage is permanently full, to the point that updates will not install.
  4. Something is broken and costs more to repair than the phone is worth.

Notice what is not on that list: a newer model existing, a slightly better camera, or a faster processor you would not notice.

The cheaper fixes to try first

Problem Fix
Poor battery life A replacement battery — a fraction of a new phone
Running out of space A memory card, if the model takes one
Feels sluggish Clear cached media; remove unused apps
Cracked screen Repair, if the phone is otherwise supported

On a phone still receiving updates, these are usually the better spend. On the A31 they extend its life but do not restore its security position.

When you do replace it

If the phone works, moving to a SIM-only plan with a modestly priced current handset is nearly always cheaper over two years than a bundled contract.

See Galaxy A25, Galaxy A16 and upgrade vs a new contract.

See Galaxy A30, Galaxy A32, budget Android deals and upgrade vs SIM only.

Frequently asked questions

When should I upgrade?

When security updates stop, or when a fix costs more than the phone is worth.

Is a new battery worth it?

On a supported phone, almost always.

Is the A31 still supported?

No. It is past its update window.

More comparisons

Support positions change. Confirm current status before buying. This is general information, not financial advice.