6.1.2 and still wifi signal problem

Question

I bought iphone 5 yesterday in London.I update my iphone to 6.1.2 and i saw a problem.My wifi signal is too weak and its drops the connections few time later.I restore my phone but still same.What can i do for this problem.Is it a hardware problem ?

Answer 1

I had problems with wifi in 6.1.2 on my 4S. Namely, I'd go to my general/wifi settings page and get to watch the checkmark cycle visible/invisible (wifi on/off) every few seconds. After a while it would apparently go permanently off for that connection. I scoured the net and found I should:
Toggle WiFi off then back on.(on phone)
Forget network for my home network and then log back in (on phone)
Reset network settings (on phone)
Reboot router
And perhaps a few more. I tried them all with no positive results.
I got frustrated and visited the local Apple store genius. She said I'd pretty much covered the whole enchalada and so it was time for the dreaded FULL RESTORE. God I hate that. I was hoping she could wave a magic apple over the phone and it would start to work or something.
She asked about backups etc. so as to not totally ruin my life. I was good and told her it was ok to infantalize my phone. A few minutes later I was walking out of the store with a "brand new" phone. At least my phone was behaving that way.
In a weird way this was a good experience. My phone was in such a state of new phoneitis that the only stuff on it was my cell data to let me make calls and get on line and a few things that I store in the cloud (I don't fully backup to the cloud, only contacts and my calendar). So I had lost all my apps, my nice directory structure, all my folders segregating my apps into neat categories etc.
So, why a good experience? Well when I got home I first restored the backup, then restored the apps and media previously stored on the phone. I've never done this before and I was TOTALLY Delighted to see that the phone was basically indistinguishable from its state prior to the wipe. All the apps were back in their designated spots and all the useless Apple stuff had been moved to purgatory on the last screen. Why can we NOT put newsstand and such into a folder or better yet simply dump it from the phone? How lame is it that Apple is so un-confident they force us to stare at those Icons in the desparate hope we start to use stuff that some of us simply are not interested in? Anyway it was nice to get my phone back to its original state.
Now the test, I turned on WiFi and selected my network, gave the wpa2 password and voila, the checkmark beside my home network started to blink again. Oh well, 2 to 3 hours of restoration was needed anyway but I was really hoping a fresh virgin install of the OS would have cured this problem.
SOLUTION:
You know, I'm fairly certain I didn't try much beyond toggling wifi on and off and doing the forget network thingies before I stumbled across a series of reports online about this problem that changing wifi network security from one type to another might do something good. So, I started with the most benign router network change, I simply changed my wifi wpa password on the router. I didn't even start with a switch from wps2 to wep or whatever else might be available as an alternate security protocol. Back to my phone and I tried to connect to wifi and entered the new password and I got access. I watched the checkmark beside my home network. No cycling on and off. I went to safari and visited a bunch of bookmarks. No starting and stopping the network connection. It appeared to have been healed. I went back into the router and reverted the password to the original.  I loaded up a couple of my security cams. Everything was working. I checked my "Nest" thermostats and they were working.
So far it's been around 18 hours and things are still good with my 6.1.2 IOS iPhone. Hopefully they will stay that way.
Although the iPhone is so locked down as to not really qualify in my mind as a true computer, it's important to remember all the disabling Apple does on the phones doesn't mean they aren't computers. Just that we can't use them that way most of the time. And with computers there are unending interactions between different services that are running in the background where we can't interact with them on the phone but are totally able to keep an eye on them on a true computer with full access by the user allowed. So... point is, it really is a computer hiding under the covers and  all kinds of stuff is happening in there. So, while one person may find a simple toggling of the wifi on and off will solve this problem others may have to do really strange things to get things working again. In my particular configuration I'm guessing that the install of the new OS somehow messed with the prefs file for wifi and perhaps did something funky to my wifi password. changing the router password and requiring me to thus create a brand new connection to it may have cleared up this problem. It's a good thing there wasn't something inherently wrong with my standard wpa password. I have BUNCHES of stuff running on wifi around the house and I seriously would hate to have to connect to everything besides the router and enter in new passwords.
Anyway, so far for me, a happy ending. Luck to you all.