Develop Bugs

Tip: Market app (wireless access)

As I mentioned in my earlier thread I recently bought a Motorola Defy. Like many other users that I read about before purchasing my first android smartphone I was not able to open Google Market app after a factory reset.
My hint is based on my own experience and I hope it serves someone else well with similar issue.
As I write this message I have no data plan on my contract and I intend to use wireless connection for emailing, internet browsing, and the Market app. Once I completed the initial setup I put my handset's network mode to 2G only. I was worried to be charged for accessing data on 3G.
I had no problem using the Market app initially over the wireless connection until I did a refactory reset to re-setup my handset properly second time round. It was then the Market app stopped working and not even a master reset resolves the problem and then I was considering to root the handset to remove certain folders as a solution to the problem.
Everytime I laucnhed the Market app it stuck at Terms and Services page. It then occurred to me to change the network mode to Automatic and switch off the wireless connection to see what would happen. Next time I laucnhed the Market app it took me straight to the market's home page. It took me two days to figure this out : (
Once I was in the market I switched the network mode back to 2G only and turned on the wireless again. Everything is working just fine now. For the porpose of this thread I powered off the handset and turned it on again to see if my last settings i.e. 2G only still launches the Market app successfully or not. I can confirm that the Market app works just fine over the wireless connection just fine with 2G only network mode.
BTW, the batter life of this handset is so impressive. I used it one and half day very extensively (over 20 times of restarting the handset alone) and I was very surprised lasted that long. On moderate use and proper battery management (no widgets, no 24 wireless connection), and putting it on air plane mode at nights I would get over 2.5 days before charging is required.
I can't wait for Android 2.2 release to make this handset even more productive for me : )

CSharpHeaven said:
As I write this message I have no data plan on my contract and I intend to use wireless connection for emailing, internet browsing, and the Market app. Once I completed the initial setup I put my handset's network mode to 2G only. I was worried to be charged for accessing data on 3G.
Click to expand...
Click to collapse
I think you may have a misconception of 2G versus 3G. They are different technologies. When your phone is in 2G mode, it uses one type of network for both voice and data. In 3G mode it uses another type which provides better voice quality and faster data speeds.
Either way your phone will still try to access data unless you turn off mobile data. If it's in 2G mode and you see the little "E" icon up in the notification area, it's still accessing mobile data - just at a slower rate.

cmstlist said:
I think you may have a misconception of 2G versus 3G. They are different technologies. When your phone is in 2G mode, it uses one type of network for both voice and data. In 3G mode it uses another type which provides better voice quality and faster data speeds.
Either way your phone will still try to access data unless you turn off mobile data. If it's in 2G mode and you see the little "E" icon up in the notification area, it's still accessing mobile data - just at a slower rate.
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Click to collapse
Thank you for your inputs. I'm very new in the world of smartphones but learning fast.
I searched around to find out how to disable Mobile data and chosen this method *#*#4636#*#* and changed my network type to GSM for best coverage and battery life now. I can confirm the Masrket app still works with wireless connection.

Changing to GSM only does not disable mobile data.
Sent from my Nexus One using XDA App

cmstlist said:
Changing to GSM only does not disable mobile data.
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
I disabled the Mobile Data option by pressing the Settings button then More>Disable Mobile Data. It was then I noticed the options for changing my network type beyond just 2G and 3G.

CSharpHeaven said:
I disabled the Mobile Data option by pressing the Settings button then More>Disable Mobile Data. It was then I noticed the options for changing my network type beyond just 2G and 3G.
Click to expand...
Click to collapse
Did that work then? You no longer connect with mobile date, I'm asking because I have now ordered my Defy but like you don't have a network plan so need a workaround.

CSharpHeaven said:
I disabled the Mobile Data option by pressing the Settings button then More>Disable Mobile Data. It was then I noticed the options for changing my network type beyond just 2G and 3G.
Click to expand...
Click to collapse
Right ok, thanks for clarifying
In Froyo there is a mobile data toggle in the regular menus, and on all Sense phones too. Is there one on Blur phones? I guess not.
Another way to block data is to go to your APN list and fudge the entry (e.g. change epc.tmobile.com to epc.tmobile.com.nodata).

jk1234 said:
Did that work then? You no longer connect with mobile date, I'm asking because I have now ordered my Defy but like you don't have a network plan so need a workaround.
Click to expand...
Click to collapse
The only way I can assure you I have successfully disabled Mobile Data by looking at the reception icon in notification bar that no longer displays G, H, E, and 3G at anytime.

Wifi Calling

Does the Wifi Calling app save more battery? I've noticed the network signal turns off when I enable Wifi Calling
Sent from my HTC Vision using XDA App

Yes, saves LOTS of battery. Big difference when wifi calling is on.
Sent from my T-Mobile G2 using XDA App

Expanding on OP:
Does WiFi automatically supersede data as well? And if so, is there battery saving in that case?

alpharomero said:
Expanding on OP:
Does WiFi automatically supersede data as well? And if so, is there battery saving in that case?
Click to expand...
Click to collapse
When you turn on WiFi, all data goes through WiFi assuming that there is a good signal on it (aka if WiFi is so bad there is no data throughput, the phone will turn mobile data back on). The phone will always choose WiFi and turn off mobile data. Some/most people say that this saves battery because the phone isn't always searching for mobile data. I'd say that this is more true if you're in a situation where there is poor/low 3G reception but good WiFi reception. I almost never use WiFi because I get full bars and good 3G speed at home. I see no reason to use WiFi in this situation as my phone isn't searching for better networks.
As far as WiFi Calling goes, in the settings of the app you can choose to have the phone "Prefer WiFi"/"Prefer Cellular"/"WiFi Only". Same thing here. If I use WiFi calling, I choose "Prefer WiFi" because if for some reason my WiFi goes down while I'm not using the phone I want the mobile network to come on so I can receive calls without having to toggle back. A situation I could see where "WiFi Only" would be applicable is if you're traveling and want to use WiFi for calls if you have a data-only prepay SIM, or if you're in an area with only Roaming coverage and you would want to just use WiFi to make calls.

Changing to WiFi only Data?

When I installed my ROM, and on first boot I was given an option for when to use data.
Wifi only, or WiFi and Mobile Networks.
Now, I am going on holiday in a week and wanted to switch it to WiFi only to avoid data roaming charges.
Can anyone help, I cannot find it in the settings.

Settings > wireless and networks > mobile network.
Sent from my Desire HD using XDA Premium App

Obviously I looked there first. There doesn't seem to be a "WiFi Only" option.
If I just deselect Data Roaming, will that essentially do what I want?

Yes, just turn off mobile network and turn on WiFi.
Sent from my Desire HD using XDA Premium App

In the widgets > settings widgets you can choose mobile network and wifi network (as well as gps and bluetooth) screen widgets so you can toggle them on and off.... when not wanting to use mobile data, its good to have those widgets on one of your screens (as the dashboard widgets are usually missing one or another of those 4 essentials)
saves time from going into the settings repeatedly just to turn something on or off.

callum_crouch said:
Yes, just turn off mobile network and turn on WiFi.
Click to expand...
Click to collapse
If I turn of mobile network, wont I be unable to make calls or receive texts?

TylerDurdenK said:
If I turn of mobile network, wont I be unable to make calls or receive texts?
Click to expand...
Click to collapse
It is stated in the setting that it enable/disable data packet usage over mobile network. It has absolutely nothing to do with your phone call whatsoever. What makes you think that way?
Just kidding. In extreme cases, to prevent data on moblie network, one uses firewall to block access to any applications that try to access it.
Sent from my HTC Desire HD using XDA App

All you need to do is deselect Mobile Network. Even the description says its used to connect to the internet.

a question really easy

Wifi randomly tuns back on....

Not sure if im missing a setting somewhere but my WiFi toggles itself back on randomly after i turn it off. I checked all the wifi settings under ADVANCED and everything looks like its in the correct setting...
Network Notification / unchecked
Keep WiFi on during sleep / (Tried both ALWAYS and NEVER)
Check for internet service / Unchecked
WiFi Timer / OFF
I am using Blazer ROM since I got the phone. Anyone having the same problem? It would be no big deal if the wifi radio didn't consume as much battery.

Not sure if Blazer rom has the option or not or if it would affect it turning back on, but is the Connections optimizer feature enabled?
Its under More Settings > Mobile networks > Connections optimizer

l3thalsab3r said:
Not sure if Blazer rom has the option or not or if it would affect it turning back on, but is the Connections optimizer feature enabled?
Its under More Settings > Mobile networks > Connections optimizer
Click to expand...
Click to collapse
Sweet, I think that was it. I turned my fonts to 'TINY' and only read about 1/4 of the fine print. If it turns on again, ill just need to go out but buy some sage to rid my house of evil wifi spirits!
Thanks...

if i uncheck connection optimizer will it never looks for even lte?

I'm guessing "preferred network mode" will select the LTE preference or not. Connections optimizer only refers to WiFi in the help text.

jeffokada81 said:
Sweet, I think that was it. I turned my fonts to 'TINY' and only read about 1/4 of the fine print. If it turns on again, ill just need to go out but buy some sage to rid my house of evil wifi spirits!
Thanks...
Click to expand...
Click to collapse
Haha, your welcome.
gotojanoo said:
if i uncheck connection optimizer will it never looks for even lte?
Click to expand...
Click to collapse
hausman said:
I'm guessing "preferred network mode" will select the LTE preference or not. Connections optimizer only refers to WiFi in the help text.
Click to expand...
Click to collapse
I'm pretty sure hausman is right on that, but I'll try it out later today when I go into an lte area and report back with my findings.
Sent from my SPH-L900 using xda premium

After a bit of testing in different 4g spots I can say that the optimizer does not effect 4g at all. And it does indeed only refer to the wifi.
Sent from my SPH-L900 using xda premium

Ive had a similar issue and im not sure why either!

Same here on stock rom.. even before I rooted

l3thalsab3r said:
After a bit of testing in different 4g spots I can say that the optimizer does not effect 4g at all. And it does indeed only refer to the wifi.
Sent from my SPH-L900 using xda premium
Click to expand...
Click to collapse
Connections optimizer was rolled out to "ensure phones haves the best possible connection without affecting battery life" On older WiMax phones it also does affect 4G. It uses location data and saved WiFi IDs to know when to connect. Sprint likes it because it offloads data onto wifi/4G whenever possible.
Sent from my MB855 using xda app-developers app

schale01 said:
Connections optimizer was rolled out to "ensure phones haves the best possible connection without affecting battery life" On older WiMax phones it also does affect 4G. It uses location data and saved WiFi IDs to know when to connect. Sprint likes it because it offloads data onto wifi/4G whenever possible.
Sent from my MB855 using xda app-developers app
Click to expand...
Click to collapse
Ah ok good to know. Though I should of probably rephrased my post since it was a reply to gotojanoo to let him know that it does not stop the phone from searching for a lte connection.

Mobile data sticks even on Wifi

I'm having this strange issue that I've never before seen on Android. Whenever I'm connected to Wifi, the phone seems to maintain a mobile data connection. Also, I'm on T-Mobile with wifi calling enabled, and it seems to stick to the cellular network even with wifi on. Am I the only one?

Ive got something similar, my battery stats show Wi-Fi is on even though its off. Rebooting the phone sorted it out.

Prasad said:
I'm having this strange issue that I've never before seen on Android. Am I the only one?
Click to expand...
Click to collapse
elvinrush said:
Ive got something similar, my battery stats show Wi-Fi is on even though its off..
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Click to collapse
Did you, guys, clear those two? Please!

Oh that makes sense. Thx

Prasad said:
I'm having this strange issue that I've never before seen on Android. Whenever I'm connected to Wifi, the phone seems to maintain a mobile data connection. Also, I'm on T-Mobile with wifi calling enabled, and it seems to stick to the cellular network even with wifi on. Am I the only one?
Click to expand...
Click to collapse
My M8 does this, so I would expect the M9 to do this as well. However the mobile data is not used; the icon for mobile data just stays up. It passes data on WiFi when a WiFi connection is available. The WiFi icon is the only one that comes and goes.
I have unlimited calling so I don't use the WiFi calling, can't comment on that.

My mobile radio stays active even while I'm on WiFi calling. Which, I'm pretty sure the mobile radio should completely turn off..
Mobile data icon stays on as well even without wifi calling, same as you.

I think the stickied mobile data icon is a non-issue, but the fact that it sticks to cellular network, pointlessly draining excess battery (especially in a region with poor network connectivity) when Wifi calling is enabled, is seriously annoying.
jauhien said:
Did you, guys, clear those two? Please!
Click to expand...
Click to collapse
Both settings are unchecked, like in your screenshot.

Just got mine too.
Am noticing the same problem. Mobile data stays on.
Hopefully there is a fix coming out?

Figured it out (For T-Mobile WiFi calling variants only)
Go into WiFi Calling settings (there should be an icon in your status bar)
Select the bottom "Do not use Cellular". This will disable cellular when WiFi/WiFi calling is enabled.
Cellular was enabled for calling handoffs (when you leave a WiFi calling area, the call gets handoff'd to the network)

wifiguru said:
Figured it out (For T-Mobile WiFi calling variants only)
Go into WiFi Calling settings (there should be an icon in your status bar)
Select the bottom "Do not use Cellular". This will disable cellular when WiFi/WiFi calling is enabled.
Cellular was enabled for calling handoffs (when you leave a WiFi calling area, the call gets handoff'd to the network)
Click to expand...
Click to collapse
Nah. That solves nothing. I don't want to be disconnected when leaving Wi-Fi. I just want cellular to be off when in Wi-Fi range, which was automatically managed with the same setting on previous phones.

Prasad said:
Nah. That solves nothing. I don't want to be disconnected when leaving Wi-Fi. I just want cellular to be off when in Wi-Fi range, which was automatically managed with the same setting on previous phones.
Click to expand...
Click to collapse
Correct, all that setting does is completely disable cellular. Even if you leave Wi-Fi, or disable it.
On all previous T-Mobile phones with Wi-Fi calling using "Wi-Fi preferred" it would completely disable the cellular radio.
Now, when I have poor signal but am using wifi calling, my phone is constantly searching for signal. Switching between 2g/4g/lte.

Yeah, you guys are correct.
Left home this morning, no Cellular.
Well, shoot...

Boo