Hi, I recently obtained an S4 and I was wondering if there was a rom that disabled the CDMA and calling capabilities of the phone. Since its not connected to a plan, i would like a wifi only rom in order to maximize battery life if there is one available. If not, could I edit the Build.prop in order to disable that or something? thank you
Why not just put the phone in airplane mode but turn on WiFi?
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Hey all,
I'm using Cyanogen's newest (4.2.6) and I'm curious if there's a way to turn off the cell antenna kind of like airplane mode. The problem I have with airplane mode is no wifi. The reason I'm curious is because I work in a place with no reception and it kills the battery as well as causes problems with texting on the Roger's network once I'm back within range.
I know you can do this in the hero roms, I'm wondering if anyone knows of any apps or options somewhere that might do the same in a non-hero rom.
From your dialer call
*#*#4636#*#*
Then Phone Info and then
"Turn off Radio"
I am not using a sim and have apn turned off. However theres is still a cellular indicator in the taskbar, and it changes as if picking up signals.
Why is this happening, when there is no cell network at all?
Simply because for emergency call you don"t need simcard
aaah i see! i was pretty used to the stock android emergency only icon on my milestone... wish there was some way of disabling the radio entirely to save even more battery though
Airplane mode disables all RF if you want to save battery...
You can also download Airplane Mode WiFi, which allows you to switch WiFi and Bluetooth back on whilst the GSM radio is off.
Regards,
Dave
Thank you for the tip dave.
EDIT: as it turns out airplane mode already allows you to toggle wifi independantly in all 2.0+ versions of android COOL!
Hi I'm running 4.2.2 cm10.2 and I used one of the flash able packages for unlocking lte (.27/.84 radios). Now whenever I am connects to my wifi overnight th next day when I leave my wifi network my cellular data is grayedout and I can only bring it back by rebooting my phone. Turning the radio off and airplane mode don't fix this, I have to reboot the phone.
Any ideas as to why this is happening or suggestions?
Thanks!
Hi,
I am using a fairly stock ROM on my S5 that has been rooted and debloated. The phone was Verizon branded, but I am using it on T-Mobile. I like 4.4.4 as my system, and have safestrap installed.
In order to get full band functionality I had to enter service mode and select LTE/GSM/WCDMA instead of CDMA preferred.
I also edited the build.prop to ensure LTE preferred and GSM mode enabled after reboots.
My problem is that if I enable Power Saving on the phone and it goes to sleep after a minute the network completely drops and I cannot reconnect to T-Mobile network. Additionally the phone seems to reset itself to CDMA preferred.
I have to turn off the phone for a few minutes then boot and now my network is restored.
The easy answer is that simply never use power saving - and why bother when I get great battery life anyway.
However - it begs the question - why would power saving kill network carrier connection? Is the antenna powered down?
If so - where else do I need to modify settings to stop the phone from returning to CDMA?
Lastly - why is it so difficult to configure a new phone like the S5 to jump carriers ? the phone is global in its band support and fully capable - but carrier branding renders this useless. Shouldn't custom ROMs be more universal in their nature and exclude carrier locks- or at least enable menus for users to select the carrier they prefer to use?