GSM vs CDMA providers and unlocked phones

GPUEnthusiast

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May 28, 2014
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I've recently encountered a complex conundrum that may be more of a legislative question than a technology related one, but who knows? It might be a tech question too.

I've been stuck with an Xperia Z3V for almost two years now. It's a great phone, errr, was a great phone. Long story short, I'm sick of Verizon telling me when and how to update my Android version. The phone has been pushed to a brand new version of Lollipop and the battery life and speed have noticeably decreased since this.

I love Verizon's network though, in terms of coverage and LTE speeds, so I want to stick with them, but not with one of THEIR phones. I was looking into getting the LG G5 H860N Dual SIM variant from Amazon for around 430 bucks unlocked. It's the international version of the LG G5 with support for dual sim cards. It seems to be a great phone with both GSM and CDMA radios in it, according to GSMArena.

There's a problem though. In big font at the bottom of the Amazon page for this LG G5 it says "Unlocked cell phones are compatible with GSM carriers such as AT&T and T-Mobile, but are not compatible with CDMA carriers such as Verizon and Sprint"

Does this mean in general, or just this phone? Are there really no CDMA compatible unlocked phones? I realized recently that tons of great phones like the Asus Zenfone 3 Deluxe, OnePlus 3, and Xperia Z5 are GSM only... is that because of international demand for GSM, or the fact that CDMA providers just don't do unlocked?

I'm just a bit confused. CDMA is massively popular in the United States and Japan, and the idea that the CDMA radio was removed from a DUAL SIM version of the LG G5 is flabbergasting.
 
Solution
There is a reason I don't do Verizon or Sprint. From what I've heard you can call them and ask nicely, but they don't have to allow your phone onto their network. I know everyone's area is different but I'd honestly suggest moving to GSM. My first phone was from Verizon and I haven't looked back. Tmo is ok where I live, but AT&T is fantastic. I am quite sure you can find something just as good as Verizon on a GSM network.

4745454b

Titan
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There is a reason I don't do Verizon or Sprint. From what I've heard you can call them and ask nicely, but they don't have to allow your phone onto their network. I know everyone's area is different but I'd honestly suggest moving to GSM. My first phone was from Verizon and I haven't looked back. Tmo is ok where I live, but AT&T is fantastic. I am quite sure you can find something just as good as Verizon on a GSM network.
 
Solution

GPUEnthusiast

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Thank you so much. T-mobile seems to be the best bet based on the coverage map of where I am up in Washington state. This just took me by surprise because I had this fancy idea that I'd just buy a nice G5 with dual sim for intl travel, and put a Verizon sim in for domestic. I knew a phone like a OnePlus 3 wouldn't work because it doesn't even have a CDMA radio in it. Looks like I can get the OnePlus 3 after all :)
 

4745454b

Titan
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Ask around and see what people have. Where I work, Tmo is horrible. In the city and most parts its ok, but my AT&T sim worked so much better. I'm really close to going back. (work has an AT&T tower on the roof so our signal for them is great everywhere, Tmo not so much.)

I have One. The two had some issues and while the 3 is a better phone overall I prefer the One to the others. If my One broke I'd probably run out and save the money and just get another One. The better quad and more ram might be nice but they are mostly selling points. Quick charge is probably the only thing the Three has on the One that I'd want.
 

FrankHope

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Feb 16, 2016
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Hello,

Since GSM and CDMA mobiles work on different frequencies.Look for the mobile which supports both frequencies, setting up by Network setting option to your desired network GSM or CDMA etc...but mobiles come with CDMA network loose their some functionality after unlocking. GSM mobiles are better to avoid any future problem and roaming charges after unlocking.

Thanks,
* Moderator edit for company link *
 

rayden54

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May 14, 2013
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Just make sure your area gets GSM coverage.

Where I live, you don't really get a choice. It's Verizon/Sprint or you don't get a signal (and it's worse out at my house than it is in town). I think that's really only a rural thing though.

@OP, how are you loving their LTE speeds. I'm only getting like 2 Mbps.