A dual-SIM phone allows you to stay contactable to your regular contacts yet enables you to take advantage of more affordable local data/voice rates to avoid expensive overseas roaming charges – without having to carry two separate mobile phones.
Nowadays, it is increasingly easy to get a local SIM card when one travels overseas for work or leisure.
The local SIM allows you to make/receive calls at affordable local rates and more significantly, to stay connected via mobile broadband – without chalking out a huge bill.
But most mobile phones allow only one SIM card to be installed – so if you put in the local SIM card, you’ll have to remove your regular SIM card and become uncontactable to those who call you on your regular number, unless you forward those calls to your local number.
Otherwise, you’d carry a second single-SIM card phone, which is a hassle.
Not too long ago …
I remember in the early days of smartphones, people were selling dual-SIM card adaptors the size of regular sized SIM cards that you could place two micro SIM cards in.
You’d have to cut your regular sized SIM card yourself into micro SIM card size and it was a daunting proposition for most people to risk damaging your SIM card in the process.
These adaptors only worked for certain models of mobile phones, and you need to switch off and on the phone to switch between the SIM cards.
Fortunately, smartphones have evolved and nowadays, you have dual-SIM card phones that enable you use both SIM cards at the same time.
I brought along a Motorola Moto G (2nd Generation) dual-SIM card phone during my short break to Thailand and it was such a blessing.
There are two micro-SIM card slots so I could keep my regular SIM card in one slot and plug in the prepaid local SIM card that I bought at Suvarnabhumi Airport in the other.
The guy at the True Move counter did all the set up for me.
So after five minutes of queueing and five minutes of installation and payment, I was as connected in Thailand as I was at home back in Singapore.
I could receive roaming calls on my regular number from my friends back in Singapore and other parts of the world, while at the same stay connected on email and social media platforms such as Facebook, Twitter and Instagram via the mobile broadband on the local SIM card.