topic Re: SIM1 remains undetected in M Series

SIM1 remains undetected

SEUser — Tue, 18 Mar 2014 09:01:13 GMT

Hello. The SIM 1 of my Xperia M dual remains undetected most of the time. Earler i thought that there is some issue with my operator,so i went on to change my operator. But even now, a red cross sign is shown and the problem continues. I have to use net on this sim,so plz help me.

Thanks.

Re: SIM1 remains undetected

_alexdon_ — Tue, 18 Mar 2014 15:05:26 GMT

Try to use one of the SIMs on GSM only and the other on GSM/WCDMA or WCDMA.

Re: SIM1 remains undetected

SEUser — Tue, 18 Mar 2014 23:10:39 GMT

sorry, what? There are 2 SIMs and 2 slots, so obviously one goes to the only GSM and one into the other one. Do u want me to try out each others' slots? By the way, today i experienced a strange thing. First time, i used USB tethering and the first SIM didn't go undetected even in 5+ hours of regular internet usage on my laptop.. I wonder why this?

Re: SIM1 remains undetected

_alexdon_ — Wed, 19 Mar 2014 11:56:24 GMT

No,I was talking about changing the network mode of the first SIM to WCDMA and the second SIM to GSM only in settings-mobile network.

Re: SIM1 remains undetected

SEUser — Wed, 19 Mar 2014 23:27:22 GMT

Oh ok, got it. Just checked the phone and found that my 1st SIM is WCDMA/GSM and other one is GSM only..So i think its already the same thing what you had advised for.

Anyways, for the moment i have a very interesting observation. I have started using internet on the SIM 1 only since y'day and i am amazed to see that it didn't go undetected even for once, no red cross mark at all. While earlier, it used to be with that mark every few minutes and my phone wouldn't receive any msg or call during that period as it was completely dead (switched of msg).

So how would you react to this? I mean, this is something unbelievable that internet connectivity is keeping it perfect,else it always gets undetected.

Thanks.

Re: SIM1 remains undetected

_alexdon_ — Thu, 20 Mar 2014 14:11:38 GMT

I do not know what to say,it could be network related also.Did you also check with your network?

Re: SIM1 remains undetected

SEUser — Thu, 20 Mar 2014 17:36:05 GMT

I don't think its a network problem because earlier i was using a different operator and i changed that,just because of this issue. I thought its a network prob. . Now Its whole 2 days and as long as i am using internet on this one, it never gets undetected. I would be thankful if you or somebody from Sony, find out the mystery.

Thanks.

Re: SIM1 remains undetected

_alexdon_ — Thu, 20 Mar 2014 18:03:09 GMT

Have you tried visiting a sony service?See what they suggest.

http://www.sonymobile.com/global-en/support/contact-us/

Re: SIM1 remains undetected

SEUser — Thu, 20 Mar 2014 22:43:43 GMT

There is no Sony service center in my city and i don't have time to visit that in another city. Very busy life.

Re: SIM1 remains undetected

_alexdon_ — Thu, 20 Mar 2014 22:47:26 GMT

Then I suggest you PM one of the sony support members(they have a blue avatar with xperia),see if they can help you.

Re: SIM1 remains undetected

SEUser — Fri, 21 Mar 2014 22:02:10 GMT

Don't they come over here? do i need to contact them through PM and only then, they will reply in here?

Re: SIM1 remains undetected

_alexdon_ — Fri, 21 Mar 2014 22:08:27 GMT

They come in the topics,but they are busy and they do not visit all of them.If you PM one of them,they will assist you faster.

Re: SIM1 remains undetected

SEUser — Sat, 22 Mar 2014 14:27:53 GMT

Thanks. Just sent out a PM to Alexander. Let's see if he comments in here.

I highly appreciate ur help.

Re: SIM1 remains undetected

_alexdon_ — Sat, 22 Mar 2014 15:04:34 GMT

Anytime,keep us updated.He should answer,after the weekend.

Re: SIM1 remains undetected

Johan — Mon, 24 Mar 2014 14:47:37 GMT

That sounds rather strange.

If I understand you correctly, you haven't experience any problems since you started using Internet on only SIM1?

There's no logical explanation to why and it shouldn't work like that. You should of course not experience the unavailability of SIM1 depending on this setting.

Could you share some more information about the network operator(s) and their supported networks?

If both SIM have GSM and 3G (WCDMA) access you could try to switch them with each other. Use the SIM that you have inserted in SIM2 in the SIM1 slot and vice versa to see if you still get the same problem.

Re: SIM1 remains undetected

SEUser — Mon, 24 Mar 2014 15:38:50 GMT

well, yeah i can do that but not at this moment because i am using the internet almost all the time. Very busy life. Plz let this thread open.

Thanks.

Re: SIM1 remains undetected

SEUser — Mon, 24 Mar 2014 16:55:36 GMT

Just did that. switched both of them with each other. and then, changed the network of 1st SIM to GSM only(no 3G) and the 2nd one to WCDMA/GSM (3G). Now i'll keep an eye in next few days how thing move on. My concentration will be to find out if the 1st SIM goes unavailable or not, as i'll NOT be using internet on this one.

will update u later.

Re: SIM1 remains undetected

_alexdon_ — Mon, 24 Mar 2014 16:57:28 GMT

Keep us updated.

Re: SIM1 remains undetected

SEUser — Sat, 05 Apr 2014 20:23:34 GMT

well,so i am back. In these all the days, SIM went missing only for few seconds. I only did this: changed the SIM (which i am using for internet) to GSM/CDMA and the other one to GSM only. When i started using internet on another sim, i did the same to that one too.

Here important thing is that even if the sim which we are using for internet is 2G only, we better change into GSM/CDMA instead of GSM only. Tried it and it worked.

So i think this thread has finally got a solution.

Thanks forall the help and being with me.

Re: SIM1 remains undetected

_alexdon_ — Sat, 05 Apr 2014 20:27:03 GMT

I have told you almost the same in my first post,but it is awesome that the phone is fine now.