Develop Bugs

[Q] How well does the dual sim functionality work on the M8 dualsim?

Hi
I really would like to turn my two phones into one and am considering getting a one M8 dual sim but would like to know how well the dual sim functionality work?
I know the mod support is properly bad but I don't mind that if I can get rid of a phone.

It's works perfectly. Only drawback is that the update s are slow in coming compared to the single sim type.

[Q] Data from both sim cards?

I am in search of a dual sim phone, and I consider the zenfone 2 a good candidate.
However, it is vital to me that the phone can support a data connection from both sim cards.
Obviously not at the same time, but to switch data connection from one sim card to the other, without having to physically change the sim cards around.
Is this possible on the zenfone 2?

ASW1 said:
I am in search of a dual sim phone, and I consider the zenfone 2 a good candidate.
However, it is vital to me that the phone can support a data connection from both sim cards.
Obviously not at the same time, but to switch data connection from one sim card to the other, without having to physically change the sim cards around.
Is this possible on the zenfone 2?
Click to expand...
Click to collapse
This is possible but sim2 only supports 2g speeds.

lordpipa said:
This is possible but sim2 only supports 2g speeds.
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Click to collapse
Thanks, that's quite a disappointment.
I thought today most other dual sim phones do support 3/4G on both sims?

lordpipa said:
This is possible but sim2 only supports 2g speeds.
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Click to collapse
HOW to get that 2G Data service??? We get superfast 2G Service from our operator (!dea Cellular in India)

Dhanuhammer said:
HOW to get that 2G Data service??? We get superfast 2G Service from our operator (!dea Cellular in India)
Click to expand...
Click to collapse
AFAIK there is no data from sim2, not even 2G

ASW1 said:
I am in search of a dual sim phone, and I consider the zenfone 2 a good candidate.
However, it is vital to me that the phone can support a data connection from both sim cards.
Obviously not at the same time, but to switch data connection from one sim card to the other, without having to physically change the sim cards around.
Is this possible on the zenfone 2?
Click to expand...
Click to collapse
.
You will not get data on sim 2 due to Asus blocking it with their firmware. Even though they used an outdated and subpar modem for sim 2, it is still capable of data. Their Zenfone Selfie does contain a dual active dual sim with lte on both sims this their "flagship" phone however used inferior hardware.
Unfortunately this may not be the phone for you in particular if you live in an area such as the U.S. or in Europe where they are shutting down 2G, it's already happening. This "flagship" dual sim phone will soon become a single sim for many of us.
I've actually talked to Asus about this and was told this is their "Flagship" phone and it is "Premium LIKE". I asked what he meant by "Premium Like" and he said it was comparable to other high end phones with compromises made on using lessor hardware. LOL, it's a knock off then, no different than buying "Prada" bags out of someones car trunk. I've had to deal with Asus on a couple of issues with their phone and have to say, I would NEVER buy anything again from them.

Changing radios on a dual sim m8?

Hello fellow enthusiasts,
I have a burning question that I need answered, and can't seem to find the info anywhere online. I was thinking about s off'ing my m8 dual sim and flashing the regular m8 radio, as I only use one sim. My provider has lte, and i have an lte plan, but the radio range is 800mhtz, where the phones lte radio is 1800. The question therein is, would flashing a non dual sim radio to a dual sim device brick it, or work?
I've flashed radios before on many different phones, just not a dual sim variant.....
Thanks for the help!!

They are different hardware, and different radios.
I'd say a brick is probable. Failure is almost certain.

Neither sim receiving signal when in dual sim mode only - wileyfox swift 2x

Hi,
Just picked up a Wileyfox swift 2x and am having an issue using it in dual sim mode.
When a single sim is enabled it works just fine but if the second sim is enabled I lose reception for both sims, once I disable one of the sims the other sim then receives reception as normal. Have looked on the forums but cannot see any other users having the same issue so don't know how to progress this.
Have used these sims in a dual sim phone previously without any issue so its clearly a handset rather than an operator issue.
Any help appreciated!

https://forum.xda-developers.com/swift-2

beroid said:
https://forum.xda-developers.com/swift-2
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Click to collapse
Is this a suggestion to post in this forum or is there a thread related to this in this forum?
I have seen the thread related to Dual Sim and the lack of 2G fallback, but that is not related to my issue as both SIMs have previously been used in other dual SIM phones.

rednanor said:
Is this a suggestion to post in this forum or is there a thread related to this in this forum?
I have seen the thread related to Dual Sim and the lack of 2G fallback, but that is not related to my issue as both SIMs have previously been used in other dual SIM phones.
Click to expand...
Click to collapse
That is the forum for your device,Wileyfox Swift 2. Here is a forum for Wileyfox Swift only.

Operating frequency
Hi,
I had a similar problem to this in NZ recently (on Swift model). It happened to me a my phone was not compatible with many frequencies of one of the sim cards I had in. Switched the sim to a more compatible network and now both Sims are behaving well.

trakedogg said:
Hi,
I had a similar problem to this in NZ recently (on Swift model). It happened to me a my phone was not compatible with many frequencies of one of the sim cards I had in. Switched the sim to a more compatible network and now both Sims are behaving well.
Click to expand...
Click to collapse
Thanks for your input.
I ended up returning the phone to Amazon and the replacement phone worked just fine so the issue was obviously limited to that particular phone.

Dual sim problem.
I had similar problem. I used ga giffgaff sim and a Three sim (Hutchinson), but three switched off 2g in my area. TFor calls it was fine, but enabling data caused problems. In the end I removed the three sim.

Dual SIM Technology and how it works on the 7T

I'm having trouble finding out what type of dual SIM technology the 7T uses. Is it DSFA of DSDS? Will either one allow me to take a call from two different carriers at any time? FYI I'll be using Verizon and AT&T.

OP has always 'only' DSDS. So you can only make one call with one card at the same time.
The other card is disabled during this call.

Thank you for the info. If I am currently not on a phone call, the phone being idle, are both Sims able to receive a call at anytime?

yes, of course.

RobM87 said:
I'm having trouble finding out what type of dual SIM technology the 7T uses. Is it DSFA of DSDS? Will either one allow me to take a call from two different carriers at any time? FYI I'll be using Verizon and AT&T.
Click to expand...
Click to collapse
Dual SIM technology? I'm on the T-Mobile variant. I'm confused.
Sent from my [device_name] using XDA-Developers Legacy app

DSDS = Dual sim, dual standby, where you have two sims from two different carriers. When one SIM is active on a call the second goes idle. DSFA = Dual sim full standby, even if one sim is active on a call the other continues to function, although I am not certain of the mechanics of how a user handles two calls at once.
These are very popular with frequent international travelers, or when someone has a company phone and a personal phone but doesn't want to carry two devices. They really haven't caught on in the US because carriers for the most part have similar coverage and don't sell them. The carriers don't want their customers to be customers of other carriers too.
Imagine living in Belgium but frequently traveling to the UK and needing to use a mobile phone in both places. The roaming fees and long distance charges would be outrageous. With a dual sim phone a user could have a Belgium sim card and a UK sim card and be able to use the appropriate sim as needed without having to place the wear and tear on the phone doing sim swaps.
I have tried to find a dual sim phone which functions well in the US. I have a dual sim S9 from the UAE market, but for some reason the data is very slow compared to a single sim S9 for the US market. I also tried a Sonim XP8 which worked well enough until the phone figured out it was in the US and disabled the second sim slot. Apparently Sonim does not want the XP8 to function as a dual sim phone in the US.
T-Mobile has disabled the second sim card slot in the 7t, for whatever reason. I have a 7t coming from direct from the manufacturer and I am excited to see how well it works as a dual sim phone. I have a line on TMO and a line on AT&T, and I don't want to carry two devices if I don't have to.

rjglenn said:
DSDS = Dual sim, dual standby, where you have two sims from two different carriers. When one SIM is active on a call the second goes idle. DSFA = Dual sim full standby, even if one sim is active on a call the other continues to function, although I am not certain of the mechanics of how a user handles two calls at once.
These are very popular with frequent international travelers, or when someone has a company phone and a personal phone but doesn't want to carry two devices. They really haven't caught on in the US because carriers for the most part have similar coverage and don't sell them. The carriers don't want their customers to be customers of other carriers too.
Imagine living in Belgium but frequently traveling to the UK and needing to use a mobile phone in both places. The roaming fees and long distance charges would be outrageous. With a dual sim phone a user could have a Belgium sim card and a UK sim card and be able to use the appropriate sim as needed without having to place the wear and tear on the phone doing sim swaps.
I have tried to find a dual sim phone which functions well in the US. I have a dual sim S9 from the UAE market, but for some reason the data is very slow compared to a single sim S9 for the US market. I also tried a Sonim XP8 which worked well enough until the phone figured out it was in the US and disabled the second sim slot. Apparently Sonim does not want the XP8 to function as a dual sim phone in the US.
T-Mobile has disabled the second sim card slot in the 7t, for whatever reason. I have a 7t coming from direct from the manufacturer and I am excited to see how well it works as a dual sim phone. I have a line on TMO and a line on AT&T, and I don't want to carry two devices if I don't have to.
Click to expand...
Click to collapse
I had no idea. So if I but a dual SIM card tray and flash the international version software on my T-Mobile variant I should be able to have dual SIM functionality?
Sent from my [device_name] using XDA-Developers Legacy app

OuncE718 said:
I had no idea. So if I but a dual SIM card tray and flash the international version software on my T-Mobile variant I should be able to have dual SIM functionality?
Sent from my [device_name] using XDA-Developers Legacy app
Click to expand...
Click to collapse
This has been done on other model phones and should be the same with this one. It was the same price point for me so I just cut TMO out of the deal. Just be careful flashing other firmware, if you are a TMO customer you wouldn't want to loose Band 71.