M1 services restored after 64 hours

M1's failed 3G network has been fully restored some 64 hours after it went down in what is the worst mobile network failure Singapore has experienced to date.

The telco put up a notice on its Facebook page and website at around 7pm today telling customers this and advising them to reboot their 3G phones if they were still unable to receive a connection.

M1's mobile disruption started at 3am on Tuesday when one of its vendors was upgrading transmission equipment at its network headquarters located in International Business Park. This caused a power problem which set off gas suppression and water sprinkler systems. One of the telco's mobile network switches then tripped, causing services to go down.

Since then, M1 had been racing against time to reconnect "hundreds" of base stations - which receive and transmit mobile phone signals - to a replacement switch.

Affected customers could not get mobile data services. Some had no voice and SMS services as well.

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