** Current Announcements **

Scheduled Maintenance Notice – IOB Mobile Banking

IOB will be carrying out scheduled maintenance of its Mobile Banking application on 15 September 2026.

As a result, Thailand Mobile Banking services will be temporarily unavailable during the following period:

Date: 15 September 2026
Downtime: 21:30–23:30 (Thailand Time)
Estimated duration: Approximately 2 hours

We apologize for any inconvenience caused and appreciate your understanding.

** Past Announcements **

Scheduled Maintenance Notice – IOB Mobile Banking

We will be switching our Core Banking system from the Disaster Recovery (DR) site to the Data Center (DC) on 13 August 2026.

As a result, Thailand Mobile Banking services will be temporarily unavailable during the following period:

Date: 13 August 2026
Downtime: 20:30–22:30 (Thailand Time)
Estimated duration: Approximately 2 hours

We apologize for any inconvenience caused and appreciate your understanding.

Scheduled Maintenance Notice – IOB Mobile Banking

Please be informed that IOB has scheduled a maintenance activity for its Mobile Banking application. During the maintenance window, IOB Mobile Banking services will be temporarily unavailable.

Maintenance Schedule

Date: 18 August 2026
Time: 21:30 (Thailand Time)
Expected Duration: Approximately 2 hours

We apologize for any inconvenience this may cause and appreciate your understanding.

Temporary Suspension of Services - as of 11 May 2026

Mobile banking services of Indian Overseas Bank will be temporarily unavailable due to system maintenance and enhancements.

Downtime Schedule:

14 May 2026: 20:30 hrs onwards (Approximately 2 hours) (Thailand Time)

Please plan your transactions in advance.

We sincerely apologize for any inconvenience caused.

For further information, please contact us at (+66) 02-224-5411-4 (Ext. 03, 04, 08).