If you’re like us and juggle between multiple SIM devices, here’s a quick reference guide to designate a specific SIM card as your primary SIM to calls and SMS to come through, you’d need to dial in the following into your phone depending on your telco in Singapore –

M1: Input *136# and press dial

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SingTel: Input *141# and dial

StarHub: Input *118# and dial

Hope this quick guide was of help!

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Gerald currently straddles between his love of video games and board gaming. There's nothing that interests him more than trying out the newest and fanciest gadget in town as well. He dreams of publishing a board game sometime in the future!