Locked and Unlocked Phones – AVC

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We landed in Vietnam yesterday and immediately got a text from TMobile that they don’t offer data roaming in Vietnam. They do offer basic voice and SMS.

So we bought two 10GB data only SIM cards in the airport for 300,000 dong (about $13 US) each.

I took out my TMobile SIM of my Google Pixel and inserted the 10GB SIM and was good to go. I can use data for voice and messaging so the data only thing is no big deal to me.

I did the same on the Gotham Gal’s iPhone and after going through a restart of some sort it reported that the SIM card was not supported on the phone. I suspect her iPhone, which she got from TMobile a couple years ago, is locked.

So she’s doing the voice and SMS only thing and I’m roaming on a super cheap data plan.

I know I’ve written about this issue dozens of times here at AVC but I find the idea that the phone provider can somehow dictate what SIM you put into it is nuts.

I also know that it’s easy to buy an unlocked iPhone these days and it is easy to get an iPhone unlocked post purchase. But even so, it seems crazy that this is how the phone market works in this day and age.

Our friends who we are traveling with are on a different carrier, either ATT or Verizon I suspect, and they too are not getting data roaming in Vietnam from their provider.

So if you plan to travel to Vietnam from the US, bring an unlocked phone and buy a SIM card at the airport. The coverage and speed on my data only SIM is great so far and it seems like a bargain, like most everything here in Vietnam which is an amazing country.



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