Wifi on 4s greyed out...need to back up :(
About 4 months ago, my Apple store kindly replaced my cracked iphone with a new one. the problem is, this new iphone has some issues. It worked fine until after about a month when the phone ran out of battery and when i charged it i discovered the wifi "on/off" button was "greyed out" as people refer to it as being. I serched for hours and tried many solutions to no luck. I then contacted Apple support and the person still didnt know how to fix it. this is a big issue because there are many things i need wifi for most importantly being the ICloud back up. Anyways, i accedentally let the battery drain and the wifi option was back! i quickly backed up my phone and i thought that was a one time thing. however, the phone wasnt picking up any signal from my home wifi so i turned off the phone and turned it back on (seeing if it would hopefully come back on) only to find the wifi was "greyed out" again. this time i did everything and it didint work until about last week. last week the wifi lasted for one day and now it doesnt pick any wifi signal from anything or anywhere. tried connecting it to itunes to see if anything wuld happen and a pop-up told me that my iphone doesnt work on itunes.. it also told me to restore it but i dont want to restore it in case the wifi greys out again.....
...here is the main problem i guess haha... how can i back up my current phone if i cannot get wifi to pick up.I am going to go to the Apple store sometime soon and i should have my back up ready for when i get the newly working phone. but i cant back up without wifi and im hesitant to turn off the phone because i dont want it to grey out again becuase i wouldnt know how to get it working again. Or should i not worry about backing it up but just focus on getting the new phone and just use the last back up from about a month and a half ago. Thank you for reading. any advice would be appreciated. sorry for this post being so everywhere also lol
iPhone 4S, iOS 6.1.3