I stand to be corrected but there is only a single model but I'm a little unsure of your actual question. Are you wantint to use dual SIM on spark, or Spark and another network? The 650 won't do dual SIM on Spark because Spark don't operate a GSM network, and there isn't a single phone in the world right now that can support 2 x SIM cards on the Spark network. If you want dual SIM's on the same network you'll need to move to Vodafone or 2degrees.

With the exception of a single Chinese only band Z3 there isn't a single phone commercially available that does dual SIM active 3G or 4G. All will only do 3G/4G + GSM.

650 will be sold in the Microsoft Store online, not sure which variant

There are a few different HW variants of Lumia 650. That entry on GSMArena describes RM-1152, the main European variant. Here you are the detailed RF bands for three of them:
RM-1152: 3G 850/900/2100, LTE 1, 3, 7, 8 20
RM-1154**: 3G 850/900/AWS/1900/2100, LTE 1, 2, 4, 5, 7, 8, 20, 28
RM-1150*: 3G 850/900/AWS/1900/2100, LTE 2, 4, 5, 7, 12/17, 20

*RM-1150 is a single SIM variant and the base HW for Cricket. It will also be sold in most of Central and Latin America.
**RM-1154 is a dual SIM variant and will be sold in several countries around the globe.

sbiddle:

 

I stand to be corrected but there is only a single model but I'm a little unsure of your actual question. Are you wantint to use dual SIM on spark, or Spark and another network? The 650 won't do dual SIM on Spark because Spark don't operate a GSM network, and there isn't a single phone in the world right now that can support 2 x SIM cards on the Spark network. If you want dual SIM's on the same network you'll need to move to Vodafone or 2degrees.

 

With the exception of a single Chinese only band Z3 there isn't a single phone commercially available that does dual SIM active 3G or 4G. All will only do 3G/4G + GSM.

 

 

 

 

 

You are right. I have another phone that I used (Moto G 1st Gen) that is running Skinny and Vodafone network and is using 3G and GSM and that's OK.

Just need a new Windows Phone that can handle dual SIM as I am using an oversea SIM (which uses the Vodafone network) just for text and such till and uses the 3G for local use.

nathan:

 

650 will be sold in the Microsoft Store online, not sure which variant

 

 

 

There are a few different HW variants of Lumia 650. That entry on GSMArena describes RM-1152, the main European variant. Here you are the detailed RF bands for three of them:
RM-1152: 3G 850/900/2100, LTE 1, 3, 7, 8 20
RM-1154**: 3G 850/900/AWS/1900/2100, LTE 1, 2, 4, 5, 7, 8, 20, 28
RM-1150*: 3G 850/900/AWS/1900/2100, LTE 2, 4, 5, 7, 12/17, 20

*RM-1150 is a single SIM variant and the base HW for Cricket. It will also be sold in most of Central and Latin America.
**RM-1154 is a dual SIM variant and will be sold in several countries around the globe.

 

So this phone (RM-1154) Rwill support Sparks 700Mhz Band 28? Just trying to be sure this is not the same one use in US's Band 28.

Yeah is there any release date for the Lumia 650 in NZ?

The Lumia 640 DualSIM LTE will do what you need (link below). That vendor is trying to stock the 650 dualSIM for me but it is not yet available in their Hong Kong distributor (where all our parallel imported phones come from)

http://www.digiparallelimports.co.nz/microsoft-lumia-640-lte-dual-sim-black-p-6308.html?cPath=60_21_145

I will report back when they have it