IPhone 4S doesn't send text messages or iMessages?

Sometimesmy messages send. Recently it's been acting up. When I send, it would say, "Sending…" but the progress bar thing stops just before it reaches the end for both SMS and iMessage. Also, sometimes when I go to my messages, it would take a long time, then redirect me to the "New Message" page. And sometimes when I check messages, it would only show the last thing they replied or the last thing I replied with. Every time these things happen, I reset my phone, then it will be okay again, but resetting it is starting to get annoying because I do this at least once a day. Is my phone just getting old or can I do something to fix it?

Do I need to unlock my iPhone before selling it?

I'm breaking my contract with AT&T through Cellbreaker, so I don't believe AT&T is going to willingly unlock my iPhone for me. Is it alright to sell the phone as is, without unlocking it? Or is there a way to unlock it (if it means selling it for more money)?

IPhone 6 Slowing Down My Wi-Fi?

So a while back, my sister bought an iPhone 6. She lived in the residence hall in her university. After a year, she moved back. Before she moved back, everything was fine. After she moved back, the Wi-Fi is slowed significantly. Only when she's home though. One time when I was playing CS: GO, my ping was 40 which was normal, when she came home the ping went up to 900+ immediately. I asked her to disconnect her phone from the Wi-Fi and it went back 40. It's only her phone though, even when my mum and dad is using their laptops at the same time it isn't that bad. How can I fix this?

Upgrading to an iphone 6 with AT&T?

Ok so i have the plan that is the
30GB mobile share value
its me and my families shared plan with four devices on it.
after 12 months of payments for the phone you are eligible for an upgrade but you must turn your old phone in because with just 12 months of payments its not fully payed of yet so you have to turn it in. My phone doesn't have a cracked or shattered screen at all but the top and bottoms do have some chipping but you only notice if you look closely but -
there's nothing too noticeable about the phone so if the worker doesn't look close enough they won't notice but in the corner the screen is very slightly able to be lifted up if you use enough force but once again not noticeable- but will i still be able to upgrade? Will they still take my 5s if i turn it in so i can get the 6?

Is the iPhone 4s still worth my money?

I need to get a phone before school starts and as a teen it's really hard to get a job and earn money. I have collected $100 so far. Also I want my phone unlocked. So I searched up the 5c and it was too much money. So I looked up the 4s and it was a better price. I just don't know if it's worth my money? Is the camera good? Is it fast? Please let me know.

I forgot the password to my iPhone?

OK so I broke my phone and we're switching it to the new one. Our backup phone. And we put the Sim card from my phone into the backup phone, but when I went to go unlock the phone with the password I had on my phone it didn't work, so we tried the password The phone had when it was in use and that didn't work either. Please help I have some more important to be tomorrow morning and I need it thank you.