There is no signal for either SIM slot, no service. the phone can read the SIM information such as phone number, but can not connect to carrier signal. I have tried some different ROMs and now on A2017Uv1.1.0B35_StockSystem_by_DrakenFX.zip
I have tried flash A2017U-N-MODEM.zip or A2017U-N-B35-MODEM.zip, none of these helps.
Is it hardware failure? or is there anything I can use to test what caused the problem?
I have the same problem, I tried to change the rom to the different versions and I also changed the modems in each one and in the same way I could not repair it
If the issue isn't on your end, then it's probably with the carrier. Go call them or visit a local carrier store. Hardware issues are possible on these cases, but rare and unlikely.
what was your solution?
Related
Using O2 Exec.
Device working perfect like PDA with GPRS & SMS functions but then I try to call it's loss signal. After "call ending" it's fidn signal again.
Already undergo to install diferent versions of ROMs & RADIO. Try to unlock to make sure that phon not locked.
Somebody HELP!!!
PS. Then SIM installed & I turn flymode I can't off it but then SIM is not installed switching performing without any problems.
PSS. sorry for english
Have you tried ...:
a) a SIM by the same provider
b) another provider's SIM
Make sure that your SIM also works in another phone. It may be unlikely that your current SIM could be the problem.
I have also a strange problem when i send an SMS larger than 300 characters it spends me money but it doesnt send it !
Triband81 said:
Have you tried ...:
a) a SIM by the same provider
b) another provider's SIM
Make sure that your SIM also works in another phone. It may be unlikely that your current SIM could be the problem.
Click to expand...
Click to collapse
SIM from another cell operator, but it's of course working.
Then it might be a good idea to have your SIM replaced.
Triband81 said:
Then it might be a good idea to have your SIM replaced.
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Click to collapse
Tested three SIMs from different operators? the result same :-(
All SIMs work on another phones.
Have you tried reinstalling the ROM that worked in the 1st place? Otherwise you'll have to consider taking to a shop.
Signal Loss Problems
I am having the same problems. I even had T-Mob send me a new phone with the same result. Did you ever find a solution?
I am also having same problem, the agency informed me that there is a damage in the internal board and it cannot be fixed. this is rediculous...
Rolland said:
I am also having same problem, the agency informed me that there is a damage in the internal board and it cannot be fixed. this is rediculous...
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Click to collapse
bull****!
i sent my pda for repairs (to fix a different problem) and after two weeks they came up with the same answer,
but a day after i got my pda back, i changed batteries and found out it was a battery problem, and not a board problem!
thats a few hundred bucks of differens!
they seem to find it as a "default" answer, instead of saying "we don't have a clue what the hell's wrong".
I recently flashed NAZtech Desire ROM and now the phone does not connect to a network. I just get the "emergency calls only" message, but that (999) doesn't work either.
The APN settings are in and selected, but when I try to select a network I get a message that says this SIM cannot connect to this network, even trying to select automatically gives the same result.
I've tried multiple ROMs and multiple SIMs and yes, I have tried doing a Nandroid restore yet still can't connect to a network.
I've tried flashing a new Radio image and reflashing cyanogen's ROM but that still doesn't work.
N.B. This did not happen imediately after flash, it happened over night as I slept. I woke up one morning and it did not connect, I tried moving to multiple different basestations in different areas with no result.
Nandroid?
The good news is that your radio isn't fully dead, bricking your phone.
This is probably not very helpful (though I don’t think anyone is going to be able to be really), but this sounds like what happens when you IMEI is blocked or invalid. The networks won’t let it connect.
Its happened to me on a pervious phone. Unlocking it caused the IMEI to be set to all 0s. Had reset it before it would connect.
Would also fit as you say it didn’t happen straight after the flash. Maybe it was unconnected?
Any chance this has happened? Ring your network see if they can tell you if its blocked (maybe a mistake when someone reported a missing phone...?) Sorry as I say probably not much help.
BigDamHero said:
This is probably not very helpful (though I don’t think anyone is going to be able to be really), but this sounds like what happens when you IMEI is blocked or invalid. The networks won’t let it connect.
Its happened to me on a pervious phone. Unlocking it caused the IMEI to be set to all 0s. Had reset it before it would connect.
Would also fit as you say it didn’t happen straight after the flash. Maybe it was unconnected?
Any chance this has happened? Ring your network see if they can tell you if its blocked (maybe a mistake when someone reported a missing phone...?) Sorry as I say probably not much help.
Click to expand...
Click to collapse
What would I see if it was blocked? if I enter *#06# It just shows my IMEI number. My phone isn't tied to a contract and I've tried different SIMs so how do I check/or get it unlocked.
Did you try another active sim card, or your sim in another phone? I had this same problem and it was just a dead sim card, went to Tmo and they gave me a new sim card for free, popped it in and it connected in a couple seconds.
ikon8 said:
Did you try another active sim card, or your sim in another phone? I had this same problem and it was just a dead sim card, went to Tmo and they gave me a new sim card for free, popped it in and it connected in a couple seconds.
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Click to collapse
I'm currently using the Three UK SIM I usually use for my N1 in my old Samsung Omnia, and I've tried another o2 (untied)* contract SIM and another active SIM.
*I know it's unlocked because it was bought for the Xperia X1 and used in two other phones afterwards (within the contract duration which is due to end later this year) - G1 and iPhone 3GS
Antiskunk said:
What would I see if it was blocked? if I enter *#06# It just shows my IMEI number. My phone isn't tied to a contract and I've tried different SIMs so how do I check/or get it unlocked.
Click to expand...
Click to collapse
You would see what you are seeing (you can see the networks but not connect to them). My MUCH older phone that I referred to did much as yours is doing. There was only the option to make emergency calls.
Its possible to report a phone stolen (by its IMEI number) and ALL the networks will block that IMEI number from connecting. Its designed to combat phone theft. Its the same reason that it is illegal to change a phone's IMEI number.
I doubt this is the case (unless you can think of a reason why it might have happened). But maybe ring your network just in case and ask them to check if your IMEI is blocked.
For the past five days my N910F has been unable to register on a network. This problem first arose while I was using the Kyubi Note 5 ported ROM. Initially I was able to manually enter the APN details and use mobile data without issue, but had to keep manually re-entering the APN info as the phone would "refresh SIM data" every ten minutes. I could search for network operators and could see every available network in my country except my own, I was advised to attempt to connect to them all by my carrier's support but all would show as registered for a split second before dropping straight away.
The following day I flashed stock Marshmallow that I downloaded from Sammobile N910FXXU1DPD3 through Odin which factory reset the device, I've since rooted and put TWRP on it. Now when I search for network operators I can see my network along with the rest of them, but same thing happens and it can't properly connect.
The SIM card works in an old Galaxy S 3 and I've had my carrier send me a new SIM which arrived yesterday and after activating it, is doing the same thing.
When I bought the phone, I bought it second hand and it was carrier locked and the carrier would not unlock it. As a workaround, I went to a dodgy GSM shop who did something which essentially changed the IMEI of the device so that it would work, so my phone's IMEI when I dial #*06# and the one under the battery/on the box do not match. I only add this because I've read online that it could be an IMEI issue? However, this different IMEI hasn't caused me any problems for the last year and a half of owning the phone (apart from the fingerprint scanner not working).
Does anyone have any suggestion for the next step? Is it worth sending to Samsung for a warranty repair? Should I try a different modem?
Basically you have knowlingy changed the IMEI to get around a carrier block, which is illegal. In doing so, and also by rooting the device you have voided any warranty left on the phone.
Congratulations, you now have one of the most expensive paperweights you will ever own.
Sent from my SM-N910F using XDA-Developers mobile app
Mod edit: Thread closed.
Changing the IMEI is illegal in most countries. Therefore the discussion thereof is prohibited on XDA.
Hi!
Like the title states my phone (GT-i9515, S4 Value Edition) is unable to register to any other network than 2G.
I'm not really sure if it's a hardware problem or something software related is messed up. So first of - here is what i did:
Checked IMEI - it's correct and corresponds with the one written on the label underneath the battery.
Re-flashed the firmware via Odin (I9515XXU1BPK1_I9515YIA1BOJ1_I9515XXU1BPK1_HOME.tar.md5) -> AP: I9515XXU1BPK1, CP: I9515XXU1BPK3, CSC: I9515YIA1BOJ1.
Checked signal strength under Device Info -> Status: somewhere between -70dBm and -50dBm.
Put the SIM in my primary phone where it's working flawlessly.
See post #3
I already figured, that it seems to be a common problem among Samsung devices (for some strange reason) but all fixing attempts or solutions confirmed working (as far as i can tell) are i9505 specific.
Does anyone know a way to tell whether it's a software or hardware issue (maybe a tool or something)? And is there anyone who has access to a service manual for this device? I know there is one on scribd but i can't download/view it since i have no premium account .
Tell me if i missed out any relevant information.
Thanks in advance!
Silly question, but did you check your APN?
I should add that to the OP. It doesn't seem to be that silly to ask according to what I have read in other posts.
Yes, I did. After i inserted the SIM initially and set the network mode to force 2G only I received a text message immediately containing all the necessary configurations.
If I try to set the APN manually the phone is looking up all available providers and does indeed find some including the one I need to pick for my SIM - even in 3G/4G mode. But if I select the provider (medionMobile, using o2 network) in 3G/4G (WCDMA/LTE) the phone isn't able to register to the network. Only on 2G.
Have you tried a different SIM from a different carrier?
I know your current SIM works perfectly in your other device, but by trying a SIM from another carrier you can determine the following. Should the other SIM work properly in the S4, then we know there isn't an issue with the phone itself, but either the service (likely), or the SIM (less likely). If the other SIM does not work properly, then you may have a problem with the SIM card slot.
Well, i tried the SIM of a friend but he does use the same carrier. I will try that tomorrow at work, there are plenty of SIMs crossing the halls
But let's say it doesn't change anything, is it possible that the SIM card slot is malfunctioning since the phone can obviously operate in GSM mode?
Yes.
Sorry for the late reply. So, I did a check with a SIM of another carrier and well, the phone did not even recognise it. Like there is no SIM present.
To replace a faulty SIM/SD PCB is not much of a deal so I will most propably just do that and post here whether it helped or not.
A service manual would still be much appreciated
The manual for the i9505 version says to check a faulty SIM/SD thing, check the voltage at a certain capacitor. But the PCB layout of the mainboard is slightly different so I would have to guess which is the right one.
Anyway, I thank you for your reply :good:
Hi. So my note 4 emmc had gone so i managed to find another mother board from a n910f europe and unlocked etc. Got it installed by a good phone repair shop and phone booted up fine. Went and rooted it installed norma v19 rom all is well. However the issue i have is reception. For like 5 mins it sees my network fine and i can make calls and sms and use 4g fine. After 5 mins it still shows my carrier name but no recpetion. cant make calls etc. The only way to solve it is to goto settings, networks then choose my network from the drop down list. However again after 5 mins same issue. Now what i tried aftwr is used samsung kies and selected Tools > Firmware Upgrade and Initialization . Then entered model name and serial number. It then downloaded the latest rom csc modem etc according to my country (United Kingdom). Went through the set up and again after around 5 mins no network. if i type *#06# it shows my imei fine. So i dont know what the issue is. One of my friends said they had the same thing with their htc phone and had to actually change the imei on the phone. Anyone have any ideas as to what i need to do would appreciate it. Thanks.
ps i went back to the phone shop and told him to check the antenna wires to make sure it was all put back together properly and he confirmed it was.
bump. anyone shed some light?
i have confirmed one more thing that the imei on the phone is different to the one under the battery so i reckon thats the issue and i need to change it to match. now how do i go about doing so?
Hi,
Have you considered the antenna could be an issue? For what it's worth I replaced the motherboard on my Note 4 a couple of months and had the same issue. I'm just wondering if the antenna wires could do with replacing?