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Samsung Galaxy S8 & Dual Sim/Duos

s8 galaxy duos dual sim unlocked gsm cdma

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#1 Andrew Revering

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Posted 14 March 2017 - 11:05 PM

I'm planning to upgrade to the Galaxy S8 when it's available on April 21st...

 

I would really like a Dual SIM version and have Sprint as my primary carrier and use a FreedomPop ATT SIM as a 2nd option when I'm up at my land which is only covered by ATT.

 

After some research, it seems that the Dual SIM version is the 'International Unlocked' version which does not have the capability of CDMA/CDMA2000 for the 3G/1X portion of Sprint coverage. Since LTE is actually a GSM protocol it has the capability of doing Sprint's LTE, but other services may be limited.

 

Is this correct?

 

If so, that probably means I just want to buy the Sprint version and get one of those little dual sim adapters you can now get like this one: http://www.magic-sim.com/

 

Also, in order to use a SIM from a GSM provider, the phone needs to be unlocked, which outside of contract means I'd either have to wait 2 years, or just buy the full-price phone outright, and then get it unlocked.

 

Then I can use my ATT SIM, but again coverage may be limited because the radios are tuned for Sprint, not ATT. But I think it may be possible for some of their services to work.

 

... does this understanding sound correct? Is there another way I can go about what I'm trying to accomplish?


Andrew Revering
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#2 greenbastard

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Posted 15 March 2017 - 12:31 AM

If dual SIM capabilities is top priority, then look into the Moto G5 Plus coming later this spring. It's supposed to work with all carriers and have dual sim capabilities. This may be the first ever dual SIM LTE phone for Sprint and Verizon. I was looking at purchasing the phone but it does not have USB-C. (That is a deal breaker as I'm not going through the hassle of replacing my USB cables back to micro USB.)

#3 Andrew Revering

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Posted 15 March 2017 - 02:02 AM

Related to this... I found a really cool site that lets you plug in any phone model and see which networks it's compatible with based on how many frequencies it covers. So it can tell you that you're 'mostly' covered but maybe you're missing a couple LTE bands or something...

 

https://www.frequencycheck.com/


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#4 ericdabbs

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Posted 20 March 2017 - 03:02 AM

I really hope that the galaxy s8 is available on april 21st. It has been way too long of a delay and i dont think samsung has to be as afraid of their QC as long as they tested those 2 corner cases of the antennas short circuiting each other and the battery is seated properly. The phone just needs to come out already.

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Also tagged with one or more of these keywords: s8, galaxy, duos, dual sim, unlocked, gsm, cdma

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