Develop Bugs

GSM & CDMA

I'm trying out a new TP2-CDMA from Telus (Canada) and this is by far the best system I could ever try in my case. I've always been a GSM user (since 1994) mostly because it gives you the latitude of using what ever device you want just by inserting your SIM card. so I got the Phone Inserted my Rogers SIM in it and it got me on the Rogers network right away I then activated the phone on the Telus network and it is also working fine... of course...
But the best thing is that I set it on "Global" network and it stays on GSM (Rogers), and when I get to an area where there is no GSM signal it switches by it self to the CDMA (Telus) network!!! this is amazing! NO MORE DEAD SPOTS! Of course you need to have two Service contract from two different service provider, but if you absolutely need to get service in areas where your current provider does not offer any, well it sure beats the hell out of having two different cellphone in your pocket... I have set my main cell number to transfer to the other on "No Answer after X # rings" and I get all my calls no mater what network I'm on!
The only down side to this TP2-CDMA Unit is that Telus got rid of a bunch of stuff that is in the TP2-GSM... like the GPS for instance... Well I guess you can't have it all...
Just thought I'd share my joy...

The GPS is working, actually it works pretty well.

rick#2,
You are right, the GPS works.
I was trying it with Google Maps and could not make it work because GM does not seem to be able to get the data connection on the GSM network to load the maps and I thought it did not have the GPS but it does and all other Maps SW works on both GSM and CDMA, except GM that does only work on the CDMA network on this particular device...

I've been using the GSM connection for the TP2 down in the states and I stay purely CDMA up here in Canada. I'd like to say that HSPA works on the GSM network but no dice... unfortunately... don't know why.

Hopefully the 850/1900MHz bands that are possibly physically present on our Telus TP2s can be made available somewhere down the line. It's too bad they aren't up and running now, since I'm headed down to Mexico in a week and they are all 850/1900 down there for their UMTS network.

Yeah..
I know what you mean
Perhaps this one can solve the issues....
http://www.onthegosolutions.com/product.asp?itemMDL=HTC_TOUCH_PRO_2_US

[Q] G2 on AT&T?

Hey guys, new to Android and T-Mobile. I got a G2 last week, and I live and work in kind of a fringe area for T-Mo coverage. AT&T has good coverage out here, but the G2 doesn't roam over to ATT, I can't even register on their system when I select it in the mobile networks settings. My question is- how can I set the phone to roam onto their system when I lose T-Mo coverage? (I have heard that T-Mo can roam to ATT on EDGE). Thanks!

As far as I know, the only way to use AT&T on the G2 would be to SIM unlock the phone and use an AT&T SIM with an AT&T account. The TMO SIM won't just allow you to roam because they don't have a reciprocal billing agreement --- though I am no expert on this.
I believe, though I could be wrong, that the G2 does not have the ability for 3G (UMTS) data on AT&T. As you stated, if you could connect to the network, Edge should work.
One solution would be to switch to an AT&T SIM and use the Samsung Vibrant, which has the ability to connect to one of the two AT&T 3G bands. Of course, if you want to use AT&T regularly, getting an AT&T phone would be a better solution. So, for you, unless you want to switch to AT&T, wifi might be your only solution.

Ugh! That is exactly what I was hoping I wouldn't read lol. Well, I do really want to stick with tmo, just wish my phone would auto roam to att when I lose the tmo signal. Thanks for the reply!
Sent from my G2 using XDA app

I asked around at work a bit, and there are cases where you can roam on AT&T's network. These cases exist in areas where T-Mobile has not, cannot, or will not build out a network. In these cases, they contract with AT&T to provide their customers with network access. Some phones will show roaming, but I think the software, at this point, has made it a seamless experience, and you don't even know you are attached to AT&T's network. For billing, purposes, if you have a national plan, you are not roaming.
This doesn't help you, but I wanted to clarify my blanket statement above.

Check out the coverage map (Select NO for Are you a Rep, then go to the Data Coverage Map):
compass(DOT)t-mobile(DOT)com
Unfortunately in your area of CA, there is no roaming partner.
The only roaming in CA is in some parts of N. CA up Hwy 1 and 101, towards the Oregon border, and in the 395 corridor.

I'm thinking of upgrading from my HTC Rhodium on ATT to a Desire Z (also on ATT). Is there anything I should be looking for to make sure it will play nice with the 3G network?
Thanks
nnvpears

nnvpears said:
I'm thinking of upgrading from my HTC Rhodium on ATT to a Desire Z (also on ATT). Is there anything I should be looking for to make sure it will play nice with the 3G network?
Thanks
nnvpears
Click to expand...
Click to collapse
You'll need to buy the Canadian version of the DZ (from Bell Mobility).

[Q] Possible Roaming Problem?

Hi All,
I live in Kansas where in a lot of places service can be poor or not existent. While visiting my family and my girlfriends family over Christmas, who live in two different areas in Southeast Kansas, where both phone and 4g/3g/1x data signal does not exist from Verizon. US Cellular is the main carrier for service in both areas with great coverage and I noticed that my new galaxy nexus did not automatically connect to the US Cellular network in either location for roaming. I was left with no connectivity at all for the entire weekend
My question is there a reason why my galaxy nexus did not automatically connect to the US Cellular network to roam?
Also is there a way to force my phone to connect to US Cellular when I am in these dead zones for Verizon?
Thanks in advance?
As a side note, I have the Data Roaming checked in the Mobile Network Settings and I have the System Select set to Automatic.

Well I broke down and called Verizon Wireless technical support today.
The tech that I spoke with checked the two areas that I go to and confirmed that Verizon is mostly non existent. He then went on to say that the phone should roam in both areas and he did not have any answer as to why it was not roaming.
His solution to my problem was to purchase a prepaid US Cellular phone and forward my calls to it when I am in these areas. I must admit that it is a solution, but what an asinine thing for a Verizon employee to tell a subscriber. He also stated that Verizon just needs to add more towers in the area, which I can almost guarantee will never happen.
So as of now I am still at a loss as to why my phone is not roaming in these areas.

[Q] For anyone who uses t-mobile, do you experience this?

I started using t-mobile monthly 4g on my phone this past month, purchased the non-gba 50.01 sim card from ebay and activated it with another t-mobile activation kit. The service has been so bad on my phone. The signal will intermittently switch on and off around every 15-45 seconds. The best internet I get is 2g, this is part of htc one x's band not being able to use t-mobile's 3g and 4g right? I'm also rooted and on cyanogenmod 10 if that helps narrow the problem. Would t-mobile's old sim card have anything to do with the service being bad, because the coverage map is excellent in my area.

UnlockedNand said:
I started using t-mobile monthly 4g on my phone this past month, purchased the non-gba 50.01 sim card from ebay and activated it with another t-mobile activation kit. The service has been so bad on my phone. The signal will intermittently switch on and off around every 15-45 seconds. The best internet I get is 2g, this is part of htc one x's band not being able to use t-mobile's 3g and 4g right? I'm also rooted and on cyanogenmod 10 if that helps narrow the problem. Would t-mobile's old sim card have anything to do with the service being bad, because the coverage map is excellent in my area.
Click to expand...
Click to collapse
Hox can access the 3g network just fine. I would go and question T-Mobile.
@vorticalbox

Unlocked HTC 10 issues with T-Mobile

I've just done a bit of traveling with my carrier unlocked HTC 10 on T-Mobile's network, and I've encountered quite a lot of reception issues with this device. I'm not sure what the issue is, but am curious about others experiences road tripping with this device.
Previously I've only used the phone in my home area (Chicago). The device has performed flawlessly there. This past week, however, I road tripped to Maine and back and had a lot of problems with coverage. I'm fairly new to T-Mobile, so I would normally write it off as their network, but my wife's iPhone 6s performed great in these areas, as did my Moto X Pure Edition.
Here are some of the issues I experienced:
In rural Maine, while the phone was roaming on AT&T, many incoming calls and texts would not come through at all. This behavior was intermittent, despite having 3+ bars of AT&T signal.
While the phone was roaming on AT&T, many outgoing texts would fail to send. Rebooting the phone was often the only way to get them to go through. Again, this was with strong AT&T signal.
Moving between AT&T and T-Mobile coverage areas in rural Maine, the phone would fail to reconnect to T-Mobile service on its own. In order to make this work, I would either have to reboot the phone, toggle airplane mode, manually select T-Mobile under Mobile network settings -> GSM/UMTS Options -> Network operators or, if those all failed, run the LTE Discovery app. I'm not sure why that would make the phone reconnect to T-Mobile service, but it seemed to do so consistently.
The phone would lose signal completly in areas where our iPhone 6s and Moto X Pure Edition had LTE signal
The phone would lose LTE signal and move to 2G/EDGE or no mobile data at all in areas where our iPhone 6s and Moto X had LTE signal
I've seen similar issues discussed over in http://forum.xda-developers.com/htc-10/help/awful-lte-signal-update-t3378163, but it seems I'm experiencing more than just weak LTE signal.
Has anybody else experienced anything similar? Or am I having some sort of hardware issue? It seems crazy to me that this device would perform so poorly compared to the iPhone 6s and Moto X Pure Edition, both of which are also carrier unlocked. HTC told me I should try a new SIM, otherwise there might be a hardware issue, but I'm wondering if this is more widespread than just my device.

Haven't had any issues with mine
Sent from my HTC 10 using Tapatalk

I live in Maine and haven't encountered any issues yet. Although I do live in So Maine so T-Mobile is pretty solid here. I would try the new SIM to see if that fixes the problem.
Are you s-off and unlocked? If so which firmware version are you on? The US Unlocked version or something else? If you're not on the US unlocked firmware I would try flashing that, if you're S-Off. If that fails to fix it then I'd suspect a hardware issue.

BladeRunner said:
I live in Maine and haven't encountered any issues yet. Although I do live in So Maine so T-Mobile is pretty solid here. I would try the new SIM to see if that fixes the problem.
Are you s-off and unlocked? If so which firmware version are you on? The US Unlocked version or something else? If you're not on the US unlocked firmware I would try flashing that, if you're S-Off. If that fails to fix it then I'd suspect a hardware issue.
Click to expand...
Click to collapse
I'm on the US Unlocked version--not sure if it's s-off, I haven't done anything to it myself, so I'm using it however it came from HTC. Not sure if they are s-off by default or not.
Unfortunately I won't be back to Maine to test this new SIM this year. I guess I'll have to test locally side by side with my wife's iPhone to try to determine if it's still dropping coverage so regularly once I get out of a metro area.

I have a T-Mobile model that is running unlocked firmware and I experience switching problems when moving from wifi to lte. Simply put, I cannot connect to T-Mobile after leaving wifi unless I reboot the phone.

3's&7's said:
I have a T-Mobile model that is running unlocked firmware and I experience switching problems when moving from wifi to lte. Simply put, I cannot connect to T-Mobile after leaving wifi unless I reboot the phone.
Click to expand...
Click to collapse
Do you use the LTE Discovery app? I wonder if that would work for you too, running though that process once usually made my phone pick T-Mobile signal back up.

Trooper Thorn said:
Do you use the LTE Discovery app? I wonder if that would work for you too, running though that process once usually made my phone pick T-Mobile signal back up.
Click to expand...
Click to collapse
I have in the past on other phones and I will try here

same problem
I had a same experience where my phone roamed onto AT&T network and it would not come back to T-mobile network. This happened when traveling from Michigan to Columbus OH and Michigan to West Virginia.
Both of the time, only way to fix was go to advanced setting and choose carrier or reboot phone.