iphone4 network problem - GSM-Forum

harshpahwa · 08-09-2012, 14:48

i have iphone 4 .it has got network problem. the problem is that first at start network is ok.after 1-2 minute no service then again network ok continous loop. plz provide any solution.

manibul · 09-08-2012, 18:57

Same problem.I changed PA,antenna sw.Any idea?

manibul · 09-09-2012, 05:38

Still waiting.............

ps3xbox · 09-09-2012, 12:52

Quote:

Originally Posted by harshpahwa

i have iphone 4 .it has got network problem. the problem is that first at start network is ok.after 1-2 minute no service then again network ok continous loop. plz provide any solution.

Common problem// you have overheating components connecting to U14 Broadcom 4750 ic and/or U2 4329 ic. Remove the shield for the broadcom chips. take CLEAR picture and post please

najmudheenp · 01-01-2013, 20:21

iphone 3g,3gs,4g 4gs,5g no service 10000000000%%%%%%%%
solution

put in sim conect itunes then reset netwoark setting ..............................

memas_trading · 01-02-2013, 08:38

bro if it,s working good what happen for hardware are you sure that is 100000000000% solotion mr najmudheenp bhai if hardware problem what you do ???????????????

jakarea · 05-03-2014, 17:11

my iphone4 restore than onr day full network full ok but 1day later no service bro pls hehp me any solution

alorpothe · 08-01-2015, 18:13

iphone network problem solve succesfil
just adjust or set correct time zone. etc dhaka

alorpothe · 08-01-2015, 19:59

100000000000000000000% worked solution
just set your country time zone on date time sattings

HDccam · 08-03-2015, 20:52

solution for: iPhone 4 works well, full network.. Date and time is correct, but suddenly no service after a few hours.

- Replace the Network (PA) Power Amplifier IC U1_RF
- If Phone has only one bar network, Jumper L17_RF (blue coil)

sollythemba · 04-11-2018, 09:10

I phone 4 low signal help mepls

HDccam · 04-13-2018, 07:17

Quote:

Originally Posted by sollythemba

I phone 4 low signal help mepls

Download iphone 4 schematic
how to print

-check J9_RF antenna connector is still connceted
-check L17_RF blue coil if missing. Bridge with solder
-replace ic U1_RF on the other side of the board

08-09-2012, 14:48	#1 (permalink)
harshpahwa Freak Poster Join Date: May 2008 Location: inside intel Posts: 176 Member: 767750 Status: Offline Thanks Meter: 13	iphone4 network problem i have iphone 4 .it has got network problem. the problem is that first at start network is ok.after 1-2 minute no service then again network ok continous loop. plz provide any solution.

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09-08-2012, 18:57	#2 (permalink)
manibul Freak Poster Join Date: Jan 2008 Posts: 378 Member: 675717 Status: Offline Thanks Meter: 125	Same problem.I changed PA,antenna sw.Any idea?

09-09-2012, 05:38	#3 (permalink)
manibul Freak Poster Join Date: Jan 2008 Posts: 378 Member: 675717 Status: Offline Thanks Meter: 125	Still waiting.............

01-01-2013, 20:21	#5 (permalink)
najmudheenp Junior Member Join Date: Aug 2010 Location: jeddah Posts: 12 Member: 1367373 Status: Offline Sonork: 5678 Thanks Meter: 2	iphone 3g,3gs,4g 4gs,5g no service 10000000000%%%%%%%% solution put in sim conect itunes then reset netwoark setting ..............................

01-02-2013, 08:38	#6 (permalink)
memas_trading Freak Poster Join Date: Aug 2012 Location: deira dubai Posts: 249 Member: 1797460 Status: Offline Sonork: 100.1622335 Thanks Meter: 24	bro if it,s working good what happen for hardware are you sure that is 100000000000% solotion mr najmudheenp bhai if hardware problem what you do ???????????????

05-03-2014, 17:11	#7 (permalink)
jakarea Junior Member Join Date: Apr 2008 Posts: 34 Member: 753889 Status: Offline Thanks Meter: 2	my iphone4 restore than onr day full network full ok but 1day later no service bro pls hehp me any solution

08-01-2015, 18:13	#8 (permalink)
alorpothe Freak Poster Join Date: Aug 2014 Location: France Age: 34 Posts: 379 Member: 2235775 Status: Offline Thanks Meter: 351	iphone network problem solve succesfil just adjust or set correct time zone. etc dhaka

08-01-2015, 19:59	#9 (permalink)
alorpothe Freak Poster Join Date: Aug 2014 Location: France Age: 34 Posts: 379 Member: 2235775 Status: Offline Thanks Meter: 351	100000000000000000000% worked solution just set your country time zone on date time sattings

08-03-2015, 20:52	#10 (permalink)
HDccam No Life Poster Join Date: Mar 2012 Location: Amsterdam, Netherlands Posts: 754 Member: 1732818 Status: Offline Thanks Meter: 532	solution for: iPhone 4 works well, full network.. Date and time is correct, but suddenly no service after a few hours. - Replace the Network (PA) Power Amplifier IC U1_RF - If Phone has only one bar network, Jumper L17_RF (blue coil)

04-11-2018, 09:10	#11 (permalink)
sollythemba Junior Member Join Date: Feb 2018 Posts: 8 Member: 2810447 Status: Offline Sonork: www.sollythemba.com Thanks Meter: 0	I phone 4 low signal help mepls