does anyone have aio? everytime i reboot my phone it drops to 3g from 4g in the actual settings under mobile networks>preferred network type..i have to keep going back to *#*#4636#*#* to change from wcmda preferred to lte/gsm .ive tried several different modems same thing and lte and 4g is widely avail in the locations i used the phone (houston).. oh and also i have checked build.prop and preferred is set to 9 with ro.telephony.default_network and tried two different combinations with telephony.lteOnCdmaDevice=0 telephony.lteOnGsmDevice=1 also tried changing that 0 to 1
Bump.
I am having the same problem now.
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My SG2 is set up in network mode with GSM/WCDMA(Auto mode).
When I’m home the signal strenght, WCDMA, is -101 dBm 7asu and the voice quality is very bad, almost unusable.
When I manually switch to GSM the signal pops up to -73 and 15 asu and I can talk with a sound quality as it should be.
To me it seems that the phone doesn’t switch to GSM, or too late, when the WCDMA signal is bad.
I have tried quite a few different modems for the SG2 but I can’t see any difference between the versions. Maybe it’s the network provider that manage when to switch?
If would be great if someone could give me some info. on how the switching between WCDMA and GSM works, and the thresholds.
GSM auto (PRL) will favour GSM over 3G.
I am not sure if it will work with your network, but you can only try...........
There are a few apps around that will do it, or you can just use the following:
1. Phone dialer *#*#4636#*#*
2. Phone info
3. Set preferred network type to : GSM auto (PRL)
Edit: I am not sure if it will revert after a reboot.
This post was rather useful info, although different phone and network, principle is the same:
http://forum.xda-developers.com/showpost.php?p=6591404&postcount=1
Hi, I have a problem with using my phone to tether. I use a Galaxy S4 Verizon Unlocked and use the T-Mobile nano sim unlimited 4G LTE data.
This is my mobile info :
+ Model number : sch i545
+ android verson 4.3
+ baseband : i545VRUEMK2
+ built number : JSS15J.I545VRUMK2
+ rooted: yes
I can call, text, use the internet, but I can't tether! I have fast.t-mobile.com as the apn, and have tried epc.t-mobile.com as the apn also.
Here is where I get confused: When I set it on GSM, I can tether, but I only get up to 3G/H+ speeds, which max around .5mbps for me (I live in Portland). When I set it on LTE/CDMA, or Global, I get 4G LTE speeds, which gets up to 3-5mbps, but I'm not able to tether. I have tried numerous tethering apps, I really don't think it's the app; I've tried tethering to different computers also, and the phone itself seems to be the problem. When I factory reset, tethering on "Global" and "LTE/CDMA" works, but in the course of downloading apps and setting up LTE and my phone in general, tethering stops working. I was messing around with the settings yesterday, and DID get tethering to work both on "Global" and "LTE/CDMA", but then it stopped working again today. The error message when I can't tether is "cannot connect to DNS server".
I've searched forums all day, and have not found an answer.. Please help! Someone suggested finding a app. to change the network settings to GSM/LTE, but I couldn't find how to do that.
I also have an I545 on T-Mobile, 1gb/mo @ lte speed. Tethering works fine for me but can't afford the data it gobbles.
To set the preferred network, go to google play and download Advanced Signal Status. Run it. Look at the info then scroll to the bottom and click Additional Info, then Device Information. Look at all that other info then scroll down to Set preferred network type. LTE/GSM auto (PRL) works for me.
It might be that I'm rooted and the rom I'm using too.
Yesss it works
THANK YOU!! I downloaded the Advanced Signal Status app, then set it to LTE/GSM auto (PRL), setup a new APN "epc.t-mobile.com", set that as the active apn, then made it inactive and selected "fast.t-mobile.com" to be the active apn again, and VOILA! it works!
bsliv said:
I also have an I545 on T-Mobile, 1gb/mo @ lte speed. Tethering works fine for me but can't afford the data it gobbles.
To set the preferred network, go to google play and download Advanced Signal Status. Run it. Look at the info then scroll to the bottom and click Additional Info, then Device Information. Look at all that other info then scroll down to Set preferred network type. LTE/GSM auto (PRL) works for me.
It might be that I'm rooted and the rom I'm using too.
Click to expand...
Click to collapse
Hello everyone, I think I made a mess...
I have a Le Max 2 X820, I went to the secret menu (*#*#4636#*#*) > phone info > 3 dots menu > select radio band > and i selected "band mode 6". All of this because I had 4G signal issues.
I thought I had solved because the 4G worked perfectly but I just found out that I can not make calls! While I try to call someone it loses the signal and displays a network error.
I tried to reflash the ROM, to flash another ROM with all the wipes, tried to reflash stock modem.zip but nothing! I am desperate! Please help me
EDIT: On the second SIM slot it works, I can make calls
EDIT 2: if I do a manual network search in slot 1 only appears 4G but if I do a network scan on slot 2 appear 4G, 3G and 2G so I can make calls
I did what you did 2 weeks ago on my x829,i think both options band 6 and usa bands just disabled 2g and 3g bands and i can get it to work with qpst or qxdm easily.
sepacek said:
I did what you did 2 weeks ago on my x829,i think both options band 6 and usa bands just disabled 2g and 3g bands and i can get it to work with qpst or qxdm easily.
Click to expand...
Click to collapse
could you do me a quick guide?
https://forum.xda-developers.com/le-max-2/how-to/guide-unlock-bands-leeco-le-max-2-fix-t3439154
My phone will go from 4G to 3G randomly. When I go into APN it's says Verizon Internet isn't check and checking it does nothing. The only fix I've found to keep APN checked is switching network mode from Global to LTE/CDMA or LTE/GMS/UMTS. Is there a way to keep Verizon Internet checking without having to switch network modes every time?
My H961N does not allow me to independently set my network band for each sim card. Both my network providers operate on 2G/3G/4G however since I have gotten this V10 I have had inconsistent network usage. At first I would strongly get one network and the other would mostly be on Emergency Calls when indoors depending on where I was. I used the hidden menu code *#546368#*961#-> Field Test -> Modem Settings, from Modem Settins I have tried to set the RAT Selection and the Network Mode however when I check Engineering Mode both sims show the same band if I am on WCDMA Only or GSM Only but neither provider operators on the same band except for one on 3G. If RAT is set to selectively move between two or more frequencies then one sim shows Invalid Band in Engineering Mode. Using Network Mode I have tried to set each sim to different band but both would either show the same band or one would appear invalid under Engineering Mode.
Another Issue I have is I am unable to use data even though I have the correct APN for both of my Network Providers. I have verified that both sims do work when used in another phone, at one point I visited both Providers but none could give me an answer to my issue. One of my Providers did however try and activated a data plan while I was in their office and the V10 did show 3G and received data however upon returning back to my regular surroundings I no longer got any data. I have tried upgrading the V10 to Marshmallow and Nougat but the upgrade did not solve this problem, neither the one I stated before. But on Nougat both my sims did show 3G but strangely only when I have my Wifi active and using a VPN. Currently I am on Lollipop and rooted I considered trying to flashing a qcn, sec and nvm files since I saw a site listing them as fixing network and data issues on this particular phone, I have the files just in case. Any help would be greatly appreciated.