** Current Announcements **
Please be informed that IOB Mobile Banking services in Thailand will be temporarily unavailable on 16–17 October 2026 due to scheduled maintenance of the municipal electrical system.
Maintenance Period: 16–17 October 2026
Reason: Municipal electrical system maintenance
Affected Service: IOB Mobile Banking (Thailand)
We apologize for any inconvenience this may cause and appreciate your patience and understanding.
Thank you for your continued support.
** Past 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.
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).