Hoe to unlock and completely reset a iphone 4?

How do i unlock a iphone 4 and completely reset it like the apple account and stuff. I don't know the current apple account and password. The phone is my uncles old one (he has a new one now) and i just want to use it for apps and music and stuff.

My iPhone 5S is messing up, a lot. What's wrong and what can help it?

I got it in April of 2014. It's an iPhone 5S, not sure if color matters but it's gold and I have at least 22 apps downloaded… It keeps exiting out of every app I go to. If I send a Kik message, it deletes but the person gets it and then when I get one, it deletes. I reset my Kik and it keeps doing it. Then my text messages; some don't send, or I don't get the responses. It's been acting this way for days, I'd turn my phone off by the power button and home button several times, it doesn't work. What if I reset my phone-- all settings? Will that work. If not that, what else can I do? Because I can't get to the sprint store as of right now. Or does anyone know what's wrong with it? Comment answers please, leave rude ones to yourself.

My IPhone storage going down even thou I haven't downloaded anything?

I've got a 16Gb iPhone and I'm new to apple, I checked the storage last night and it was 10.7 and today it's now 10.0 and I haven't downloaded a single thing! I haven't sent any texts and the safari data is like 20kg
I plugged it into iTunes and the "Other" section is like 2gb which confused me as I literally have a few songs and maybe 5 apps and that's it, I've restored my phone and nothing has changed gb still going down.

My iMessage won't work on iPhone 4?

It was working fine, then it just randomly stopped working. I can't receive or send iMessages. My iMessage is activated and all my settings are right but it won't work.

How to block someone on whatsapp?

He is really annoying me with pictures etc?
Though there ain't no "block " button on the whatsapp chat

I have a iPhone 5s, please tell me!
Thanks!

Ps: I also blocked him on my iPhone phone book and he's still calling etc
I just need him blocked on whatsapp

I took my Iphone 5s in to repair, and now its completely messed up?

The other day my phone got knocked out of my hand by my mum on to the kitchen floor, When i picked up my phone and pressed the button for the screen to come on half of the right side screen was black, and the other side just had weird lines over it, So the next day we went to the phone shop (Vodafone) and they said that it costs £190 for it to be repaired even though i'm under guarantee for a year. The phone really needed to be fixed, so we went to a phone repair shop which they said they would charge us £80 and do a good job on it, He said it would take an hour to repair! After that hour i went to collect my phone but then he told me it will take another 30 minutes so i told him i would collect it tomorrow (Meaning today) So around about an hour ago i collected my phone, the touch on the phone was completely ruined and there were still lines on the phone screen! So i complained and he said another 30 minutes and i will fix it, I went home and then came back to collect it again the touch was much better but the side of the phone has been completely ruined! The right hand side of the screen is poking out and the side frame and been dented and its all poking out and the metal feels rough and i nearly cut my finger on it, Also the home button is out of place and i'm not happy! I don't want to go back there as they will not be touching the phone ever again!

Please can someone help me on what to do to get this phone fixed.

How to tell if someone blocked your number? (iPhone 5)?

I was texting a girl I met at the beach. We was really getting alone. She said she liked me. She even kissed me out of the blue one night. But then one day my iMessages stopped delivering. I tried calling but all I got was "We can't complete your call at this time. Try again later." Her phone could be off and I could be over exaggerating but i really like this girl that's why I'm asking.