Hello,
I upgraded my plan to one which includes LTE data transfer. When I turn on mobile data connection (with data roaming allowed) phone connects only to 2G EDGE network. There is no way to connect with 3G/HSPDA/LTE despite good signal and proper settings (preffered network type, apns etc). I've tried:
- few different modems/radios: XXUHOB7, XXUHOB8, XXUGNG8,
- few roms: stock 4.4.2 I9505XXUGNG8_I9505YXZGNH2_XEO, CyanogenMod 12, CyanogenMod 11, I9505_-_Official_Google_Edition_5.0.0_by_Jamal2367_Stable-R2.1 and JFLTE-GPE-20150315
With no luck. I didn't used data connection a lot before so I can't say when the problem started to occuring. I tested my SIM card on different phone and LTE connection works... I attached screenshot from "Advanced Signal Status"
Do you have any ideas how to solve this issue?
Thanks!
same error here!
any solution??
wjtk said:
Hello,
I upgraded my plan to one which includes LTE data transfer. When I turn on mobile data connection (with data roaming allowed) phone connects only to 2G EDGE network. There is no way to connect with 3G/HSPDA/LTE despite good signal and proper settings (preffered network type, apns etc). I've tried:
- few different modems/radios: XXUHOB7, XXUHOB8, XXUGNG8,
- few roms: stock 4.4.2 I9505XXUGNG8_I9505YXZGNH2_XEO, CyanogenMod 12, CyanogenMod 11, I9505_-_Official_Google_Edition_5.0.0_by_Jamal2367_Stable-R2.1 and JFLTE-GPE-20150315
With no luck. I didn't used data connection a lot before so I can't say when the problem started to occuring. I tested my SIM card on different phone and LTE connection works... I attached screenshot from "Advanced Signal Status"
Do you have any ideas how to solve this issue?
Thanks!
Click to expand...
Click to collapse
It really depends on what bands your carrier is using. For example, in romania, we have a carrier (digi mobil) that has 4g signal only on the tdd 38 2600mhz band, a band that our phone (i9505), doesn't support.
You should look into your carrier bands, get info on what bands are they currently using and then see if they coincide with the bands that your phone supports. What variant do you have and on what carrier are you on?
Is your phone showing the correct imei?
audit13 said:
Is your phone showing the correct imei?
Click to expand...
Click to collapse
How do i know if my imei is "correct"? I checked my imei and i inserted it in a site and i found the specifications of my phone as they should be, but my 3g and 4g are completely dead.
Does the imei in the phone match the imei on the label under the battery?
My Note 4 does not allow to latch to 2g network when 3g is available.So I changed the settings in device info *#*#4636#*#* accessed via Advanced Signal Status. The problem is that i am no longer able to switch to hspa/3g preferred,/LTE/GSM auto back and even edge does not work when data is enabled for operator1 and 2 ON SIM1 .Data works when switching to SIM2 for operator 1,2 or 3.The problem is on two different 3g enabled sims of airtel and bsnl (already checked the sims on other phone). While 3g hspa works without any problems with a different hspa aircel sim(operator 3). This makes me believe the modem sim1 has not lost functionality to use hspa/edge.
Tried -
1.Clearing cache and data of several different system apps related to settings and network but nothing happened.
2.Factory reset
3.Kitkat 4.4.4 Rom flash via odin.
4.Lollipop 5.0.2 Rom flash via odin.
After Googling a lot : I think the problem is : the phone is not able to connect (establish a data connection ) on hspa so reverts back to UMTS for Operator 1&2 (BSNL & Airtel) . As far as i know UMTS does not allow data connection. I cannot understand why hspa/hspa+ still works for operator 3 (Aircel) . When i changed my settings from WCDMA Preferred to GSM only i was on operator 1 (BSNL) . When i tried reverting back to WCDMA preferred it switches momentarily to HSPA then tries to establish a data connection and reverts back to UMTS. Same behaviour is for operator 2 (Airtel). Both operator 1 &2 works with GPRS on SIM2 and EDGE (when change to GSM only with Advance Signal Status) on SIM1 . When not in "GSM only" mode it locks to UMTS and no data connection is established.
SAME BEHAVIOUR IS ON LOLLIPOP EXCEPT
So maybe this was a bad idea but I'm on boom mobile (verizon mvno) and thought I could save some money and picked up a sprint s7 edge on sale, I just had it unlocked and they flashed it to the 935u unlocked version. The problem is I can't connect to the verizon network, after playing around with it a bit I got it to connect to the verizon lte network but still no voice. In my meager attempts to troubleshoot I noticed I have the options under network mode of
LTE/3g/2g -->> this picks up all networks in my area (Verizon, Sprint, ATT, Tmobile, US Cellular)
3g/2g --> only shows ATT and Tmobile
3g --> only shows ATT and Tmobile
2g --> only Tmobile
So I'm thinking my phone isn't setup right to connect to cdma networks which I thought the 935u rom was supposed to do. Anyone have any tips on how i can further troubleshoot this?
Thanks in advance.
edit: Well I installed a program called 4g LTE switch and set it to cdma only and I was able to make a phone call (3g data also worked) like that but changing it to LTE/cdma wouldn't let me make a call but LTE data worked, if i leave it set to LTE/cdma and reboot it switches back to LTE only.
edit2: Maybe it's trying to connect to volte which isn't offered for Verizon MVNO's yet but i don't see any settings available to disable that.
edit3: When set to LTE/CDMA I could sometimes make outgoing calls, sometimes I would get the double dial prompt, it was very slow to switch between LTE and CDMA so I would miss incoming phone calls.
I threw in the towel and just flashed the latest Verizon rom and it's working properly.
HI,
My redmi note 7 has a issue, when I put the Phone in GSM automatic he take 4g for a while but after some minutes it goes down to H+ or H (depends of the signal) and it dont take 4g again, it take 4g if I reset the signal or put airplane Mode for a moment. If I put LTE only in the settings it takes LTE and stay there normal, the speed test is normal for LTE but there is not LTE in everywhere and I lost the signal if there are not LTE. Why the Phone dont go 4G automatic when there are 4g?
Sorry for my english
I'd try changing the "preferred network type" under SETTINGS > NETWORK & INTERNET > MOBILE NETWORK (I'm on HavocOS, on your rom the path may differ)
The preferred network type is GSM/LTE
I‘ve got a rooted OP6T and until now I only used SIM1 slot where I could change to the 4G only network mode via *#*#4636#*#*. Now I also use a 2nd SIM. But I have the issue that the phone constantly switches between Edge and 4G in areas with bad cell reception (we use LTE900 and LTE800 with the exact same coverage as Edge so the switching back is just useless).
If I switch the SIMs and force LTE I can use it with no issues, but in SIM2 Slot the fallback to Edge is just so annoying because it just could use fast LTE at this place...
Is there any way to change this behavior or force 4G on both SIMs simultaneously?