5,606,530 Members 34,058 Now Online
XDA Developers Android and Mobile Development Forum

S3 - suddenly Mobile network not available

Tip us?
 
parkerfairfield
Old
#1  
Junior Member - OP
Thanks Meter 0
Posts: 15
Join Date: Jan 2011
Location: Guangzhou, China

 
DONATE TO ME
Angry S3 - suddenly Mobile network not available

I have a Samsung S3 GT 19300.
Purchased in Hong Kong. Using China Unicom, and I have a monthly plan, fully paid up.

It is stock - I have not rooted it.

Suddenly, about 3 days ago, I started having problems with it connecting to the network. I ignored this issues because I was on vacation, and roaming ... so I thought it was due to the roaming.

I'm back home now, and I can not make any calls.

When I call out, the phone:
- sometimes doesn't connect to the network - the call doesn't go through at all
- sometimes dials the other end, but there is no sound between the two phones. When that happens, the phone connection lasts about 15 seconds, and then the Samsung phone shows the network as not available, with the circle with a slash through it, and says "Mobile
network not available".

I've rebooted many times.
I've took out the SIM card, and put it back in.
I've checked the firmware - and the firmware is current.
I've disabled JuiceDefender Ultimate

Strangely, I CAN send data thru the network, but can not receive or make calls.
I also found out that WHILE I CAN SEND / RECEIVE data (internet), FourSquare can not identify where I am...


Suggestions?
 
eytan123
Old
#2  
eytan123's Avatar
Senior Member
Thanks Meter 111
Posts: 355
Join Date: Oct 2010
actually it seems like a problem with your network\sim card.
i'd try first to ask other users under the same network if they experience problem and replace the sim card
Please use the Thanks to anyone that deserves it
 
JJEgan
Old
#3  
Senior Member
Thanks Meter 4406
Posts: 23,036
Join Date: Oct 2010
Backup Data factory reset ..
Try with a different sim card are the usual first steps .

jje
 
Odia
Old
#4  
Guest
Thanks Meter 758
Posts: 662
Join Date: Jan 2009
Quote:
Originally Posted by parkerfairfield View Post
Strangely, I CAN send data thru the network, but can not receive or make calls.
Is your IMEI correct?
 
parkerfairfield
Old
#5  
Junior Member - OP
Thanks Meter 0
Posts: 15
Join Date: Jan 2011
Location: Guangzhou, China

 
DONATE TO ME
Quote:
Originally Posted by JJEgan View Post
Backup Data factory reset ..
Try with a different sim card are the usual first steps .

jje

I forgot to update my post.

I used a friend's SIM - which is on the same network (China Unicom) as my SIM card is ...

I had the exact same problems.
 
parkerfairfield
Old
#6  
Junior Member - OP
Thanks Meter 0
Posts: 15
Join Date: Jan 2011
Location: Guangzhou, China

 
DONATE TO ME
One of my friends tells me I should re-install a ROM ... What do you think?

QUESTIONS:
Should I try to root the phone?

I ask because (a) it's not yet
(b) I want to back it up, and understand Titanium Backup to be the best ... but that needs to be rooted.

FINALLY - how woulld you back it up? I hate losing data.

I have a huge DROPBOX account ... but don't see a great way to use that to back it up.

Thanks.
 
sasogf
Old
#7  
Junior Member
Thanks Meter 0
Posts: 1
Join Date: Jul 2012
i've a similar problem but with sms..
 
pardoned
Old
#8  
pardoned's Avatar
Senior Member
Thanks Meter 501
Posts: 1,942
Join Date: Oct 2010
Location: Belfast
Quote:
Originally Posted by sasogf View Post
i've a similar problem but with sms..
Awesome. Good for you.





Quote:
Originally Posted by parkerfairfield View Post
One of my friends tells me I should re-install a ROM ... What do you think?

QUESTIONS:
Should I try to root the phone?

I ask because (a) it's not yet
(b) I want to back it up, and understand Titanium Backup to be the best ... but that needs to be rooted.

FINALLY - how woulld you back it up? I hate losing data.

I have a huge DROPBOX account ... but don't see a great way to use that to back it up.

Thanks.
If it's within guarantee then just take it back to the store. Sounds defective and rooting would void your warranty on a faulty device. You'd probably find that rooting and a custom rom would not help anyways.

My $0.02 is take it back to the store, but back up your setting to Samsung drive thing. It backs up message too.

Sent from my GT-I9300 using xda premium
HTC One, completely stock- for once.

 
Timeline of phones:
Nexus 5, Samsung Galaxy S4, Samsung Galaxy S3, HTC Sensation, HTC Desire HD, HTC Desire, iPhone 3G, Nokia N95 8GB, Sony Ericsson K800i, some other Sony Ericsson walkman phone, Nokia 3310, Nokia 6110


Dont forget to hit "Thanks" if I helped at all. It's appreciated!

Tags
19300, china unicom, mobile network
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes