If you returned to eFootball Mobile after a long break and your old data appears to be gone, it is important to separate a normal login or Data Transfer problem from KONAMI's inactive-account deletion policy. In June 2026, KONAMI announced that some long-unused mobile game accounts and related save data would be deleted around the v6.0.0 Season Update. If save data was actually deleted under that policy, KONAMI's warning is unambiguous: it cannot be restored.
What exactly did KONAMI announce?
In its 'Deletion of Inactive Game Account and Save Data' notice for iOS and Android, KONAMI said it would delete game accounts and related save data that had not been used for a long time where there was a strong likelihood they would not be used again. This was a mobile notice; it was not presented as a general PlayStation, Xbox or Steam account-deletion announcement.
Who was at risk of deletion?
KONAMI gave a concrete example: a user who had not logged in for at least six months and had not played a single match since the release of v5.0.0. The wording matters. The notice says 'such as', so this is an example of the broader 'strong likelihood of no future use' standard rather than an explicit statement that those two conditions are the only possible deletion criteria.
Did this include older PES-era data?
Yes. KONAMI explicitly says the cleanup also includes game accounts and save data from versions prior to eFootball. A very old mobile account does not fall outside the policy merely because its history began under an earlier game name.
When was deletion scheduled?
The June notice said inactive accounts and data would be deleted during maintenance for the v6.0.0 Season Update in the August-to-September 2026 period and that actual dates would be announced later. A separate Season Update Maintenance notice dated August 10 scheduled a large maintenance window from August 12 at 13:00 UTC to August 13 at 08:00 UTC. However, the deletion notice used here does not itself assign every deletion operation to one final date, so this guide does not claim a more precise deletion timestamp than KONAMI published in that source.
What did players have to do to prevent the 2026 deletion?
KONAMI's instruction was more specific than simply launching the app. A user who wanted to keep the account and save data was told, before maintenance began, to log in to the game and proceed to the screen where the Login Bonus could be received. That is the exact preventive action described in the notice.
Did you need to play a match to keep the account?
The prevention section did not say that a match was required. 'No match played since v5.0.0' appeared inside KONAMI's example of an account that could be considered inactive. The published preventive step was to log in and reach the Login Bonus screen. Keeping those two parts separate avoids turning an example criterion into an extra recovery requirement.
Can deleted eFootball save data be restored?
Not according to this notice. KONAMI states that once save data is deleted, it cannot be restored. To play after deletion, the user must start over with new save data. Reinstalling the app, switching phones or repeating Data Transfer should not be described as a recovery method for data KONAMI has already deleted.
What happens to the linked KONAMI ID?
This is one of the most consequential details in the notice. If a deleted game account had been linked to a KONAMI ID, KONAMI says that KONAMI ID cannot be linked again to another game account. The notice does not say the KONAMI ID itself is deleted; it specifically says it cannot be linked again to another game account.
Does starting new save data bring back Players or Coins?
No. 'Start over again with new save data' describes a fresh start, not restoration of the previous account. The source offers no promise that old Players, Coins, progress or history will be returned after the save data has been deleted.
How is this different from a Link Data problem?
A Data Transfer error, a KONAMI ID access problem, a 403-style web error or using the wrong transfer method can prevent access even when account data still exists. The inactive-account policy concerns deletion of the save data itself. Do not conclude that deletion happened just because one login attempt fails. If your account should still exist, verify the correct Link Data path and use official support before treating the data as gone.
What should you do if you return now and cannot find the old account?
- Confirm that you are using the same mobile ecosystem and the same login or Link Data method you previously used.
- Check the email account associated with your KONAMI ID for old linkage or security messages that can help establish account history.
- Do not assume the account was deleted based on one failed sign-in or transfer attempt.
- If the account matches the long-inactivity pattern and the game now presents fresh save data, contact official KONAMI support to clarify the account state.
- If KONAMI confirms the save data was deleted under the policy, do not expect the old content to be restored; the official notice says deletion is irreversible.
What if your KONAMI ID will not link to a new game account?
If that ID was previously linked to a game account deleted under this policy, the notice provides a direct explanation: the linked KONAMI ID cannot be linked again to another game account. Do not hand the ID to a third-party 'recovery' service or attempt unsupported bypasses. Use KONAMI's official support route if you need confirmation of the ID's state.
Does this apply to an account that is active now?
The announcement targets long-unused accounts and save data that are considered unlikely to be used again. A player who logs in and plays regularly does not match KONAMI's published example. Still, do not treat the 2026 six-month example as a permanent promise for all future seasons. For an old mobile account you value, maintain access and read official notices before major Season Updates.
What should players learn for future Season Updates?
- Do not assume an old mobile account is stored forever just because it once had a KONAMI ID link.
- Before a major Season Update, check official news if you own an account you have not used for months.
- Follow any preventive step exactly; in 2026 KONAMI specified reaching the Login Bonus screen.
- Keep control of the email and KONAMI ID connected to your account and never share credentials with third parties.
- Distinguish a recoverable transfer/login problem from irreversible deletion of save data.
Could KONAMI use the same deletion policy again?
The notice connects inactive-account deletion to the eFootball Terms of Use and shows how the policy was applied around the 2026 Season Update. That does not prove there will be a fixed annual cleanup with identical thresholds. If KONAMI announces another cleanup, use the new dates and instructions rather than assuming the 2026 example automatically applies.
Common mistakes
- Treating six months as the only permanent deletion rule when KONAMI presented it as an example within a broader inactivity standard.
- Saying simply opening the app was enough when the notice specifically required reaching the Login Bonus screen.
- Assuming a KONAMI ID link guarantees restoration after save data deletion.
- Confusing an ordinary Link Data failure with confirmed deletion of save data.
- Promising recovery of Players or Coins after official deletion even though KONAMI says the deleted save data cannot be restored.
Sources & references2
KONAMI — Deletion of Inactive Game Account and Save Data (12 Jun 2026, iOS/Android): KONAMI — Season Update Maintenance (10 Aug 2026)