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[Solved] Your sim card does not allow a connection to this network

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Bingley

Senior Member
Jan 6, 2011
1,054
182
Netherfield
Apps & Games
Solved for me @ post #5 http://forum.xda-developers.com/showpost.php?p=10865272&postcount=5

I've searched, read, and called my mobile provider (3 UK) to no avail, so I'm starting a fresh thread on this issue.

Relevant details:
Nokia E65 + 3 PAYG sim = ok
HTC Desire unlocked (from T-Mobile) + 3 PAYG sim = "Your sim card does not allow a connection to this network"
HTC Desire above, + O2 + Virgin sim = ok

From what I've learned this has nothing to do with Android os, ROM or RUU etc., and is purely a setting/sim/connection/whatever problem. Or is it?

I bought an unlocked T-mob-branded Desire which works with o2/virgin sims, but selecting my 3 network results in the "Your sim card does not allow a connection to this network" message - yet same sim is fine in my Nokia. Which I cannot work out as that implies it's a combination of phone+network, surely?

When I first got the phone, unpacked it, 3 sim in, it worked, so I rooted w. Unrevoked it and it still worked, then I Nandroid-backup'd (which I still have), then I tried I think Cyan rom 6ish, and Oxygen 2 rc6 with a Goldcard in place [goldcard has nothing to do with sim/connection, just flashing, correct?], no service/not allowed on network; same with oxygen rom. So I nandroided-restored and still no luck.

I unrooted by RUU-ing with:

RUU_Bravo_Froyo_HTC_WWE_2.29.405.5_Radio_32.49.00. 32U_5.11.05.27_release_signed.exe

(I'm on 3 so tried RUU_Bravo_H3G_UK_1.22.771.1_Radio_32.36.00.28U_4.06.00.
02_2_release_127568_signed.exe to get a '3-rom'd phone' but I can't downgrade-which is fine by me)

so I'm back to Froyo 2.2 stock/whatever it's called, and no luck still. I mention this as I'm sure all this rom-ing has absolutely nothing to do with it but would like to be clear.

Has anyone any idea what causes this occur - not connecting that is - would 'disconnecting from network, romming, loading a new rom w/ sim, connecting and getting maybe kicked off' be the case? Or is this certainly a problem with the sim and this phone and the network; or can somehow a phone be unlocked only on certain rom and not transfer (certain this is not correct) to another - unbranding via goldcard + RUU 2.29..... has been done numerous times by people yet I seem to get this problem.

Long post, but if someone can definitely help it would be greatly appreciated - while comments like 'have you rebooted' are nice, yes, I have many many times, wipes settings, factory restored data, input apn settings, *#4636#*#* doesn't show anything I can really find of use (I tried selecting GSM only, WCDAM only, neither work) and I've tried manually/automatically connecting to network but am plagued with my "Your sim card does not allow a connection to this network" message. Which ultimately makes my £300 phone as much use as an iPhone 4 being held wrong.

I cannot understand how my sim worked before on the same phone, but now after tinkering (nothing of which I think can effect this problem) it's not working again. Apart from my old Nokia.
 
Last edited:

galaxian2007

Member
Oct 19, 2007
42
0
Bangaluru
goto *#*#4636#*#* and post your signal strength (in dbm) and LAC and CID values. It will also be good if you could attach output of logcat -b radio.
This is a well known problem with a no known answer.
 

hey_tim

Member
Feb 10, 2007
9
1
Is the number stored correctly - i.e. it hasn't lost the '+' from a number starting 44?

Sent from my HTC Desire using XDA App
 
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HiddenRambler

Member
Jan 21, 2011
35
65
I had the same problem two weeks ago when I returned from my holidays. I put in my 3 UK sim and it refused to connect with that same error. Sim worked perfectly in other phones.

Finally 3 UK advised me to do a factory reset on my from the Settings->Storage menu which resolved the issue. You seem to have done a full restore from a RUU which probably should be equal to doing a factory reset. But it's probably worth while doing it anyway in case the issue was with the /data or cache partition which for some reason might not have been cleaned by the RUU.
 

Bingley

Senior Member
Jan 6, 2011
1,054
182
Netherfield
Apps & Games
Well, I *think* I've fixed this (for me at least) - just waited a few days and tested to make sure it wasn't a 'ymmv' quick quip fix.

Basically, I'm on 3 - 3G only - and phone was set to 'WCDMA (3G) preferred' - with low signal/reception (-113dbm) it seemingly tries to get the 2G signals around (Orange-whom 3 piggyback[ed] on in low 3G areas; and O2) while changing to 'WCDMA Only' forced it to only try 3G networks - 3.

So, try this:

Key in, but don't 'call': *#*#4636#*#*
Select Phone Information
Near bottom, Set preferred network type to: WCDMA Only

Fixed it for me instantly. Three mobile UK still has -111dbm as it's best reception here but now at least I can connect to it :)

Let me know if this fixes it for you (clearly, if you're on a 2G-only network selecting GSM only (2G) may work).
 

sunny54_8

Senior Member
Jan 23, 2014
140
7
35
una himachal
hi all. I was as usual using my xperia j but 3g signal was low so I installed signal booster app and after boosting signal the app asked with a popup window to enter network unlock password. I without thinking anything entered 12345 and after this it said wrong network password. since this happened I am getting error on Xperia J (st26i) that your sim doesn't allow connection to this network. I tried with many sims but no signal. It always shows all networks when search for network manually. But gives that above mentioned error when trying to connect to any searched network. I checked if my imei is blacklisted but there's no problem about imei. its clean. I flashed stock rom, custom rom but nothing helped. how to solve this strange error.
 

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    Well, I *think* I've fixed this (for me at least) - just waited a few days and tested to make sure it wasn't a 'ymmv' quick quip fix.

    Basically, I'm on 3 - 3G only - and phone was set to 'WCDMA (3G) preferred' - with low signal/reception (-113dbm) it seemingly tries to get the 2G signals around (Orange-whom 3 piggyback[ed] on in low 3G areas; and O2) while changing to 'WCDMA Only' forced it to only try 3G networks - 3.

    So, try this:

    Key in, but don't 'call': *#*#4636#*#*
    Select Phone Information
    Near bottom, Set preferred network type to: WCDMA Only

    Fixed it for me instantly. Three mobile UK still has -111dbm as it's best reception here but now at least I can connect to it :)

    Let me know if this fixes it for you (clearly, if you're on a 2G-only network selecting GSM only (2G) may work).
    1
    Is the number stored correctly - i.e. it hasn't lost the '+' from a number starting 44?

    Sent from my HTC Desire using XDA App