Error Description not available: iPhone problem?

I have an iPhone 5, ios 9.1, today i tried to download a free app from the app store. I entered my password and then an error showed up, it said "error Description not available" and the app won't download. I have tried to download different apps but it still didn't work. So can anyone please help me solve this problem?

Optimum Wi-Fi works on iPhone but not on macbook?

Ok so my friend gave me his optimum Wi-Fi about a month ago. It's been working great but today the Wi-Fi stopped working on my MacBook Pro. It works fine on my iPhone PS3 and tablet. What's the problem?

My iPhone isn't ringing when I'm on the lock screen?

Recently, I have jailbroken my phone. I installed a couple things and my phone didn't have any problems. I then installed priority hub and watch notifications. After that, my phone stopped ringing whenever it was on the lockscreen. I'd turn it on to see I had missed calls and text messages. I uninstalled them to see if that's fix it, but it didn't. Has anyone else experienced this? Any solutions?

My iPhone 6 has suddenly turned negative and touch is unresponsive?

I was just watching youtube on my iPhone 6 when the screen suddenly turned negative and unresponsive to touch! I've restarted my phone twice (by pressing the lock button and home button at the same time) but it's still unresponsive and negative when it restarts! Has anyone had this issue before and how did they fix it?!

Added (1). ok, nevermind… It's now suddenly back to normal after i just left it alone… Saves me money going to the repair shop, i guess.

Will clearing cache in an app make me lose data or memory?

I need to clear up space on my iphone and I keep reading about clearing cache. If I do that will I lose progress on a game, for example, or will I basically be resting the app? Basically will I notice a difference if I do clear my cache?

I deleted a note on iPhone 5?

I have one note in the Notes app used to store passwords. I was adding a new one and the Notes app quit randomly. I opened the app up again to the list of all my notes and as soon as I opened it I watched my password note slide left and disappear as if it was being deleted.
I'm not able to recover this note.

I tried searching through my email, but I can't even find any notes there. I have them synced to iCloud and when I search for a note in the search section it usually will appear.

My iCloud storage has been full for about 1.5 weeks, however when I logged into iCloud on my computer to try and recover the note, it was deleted there too (which doesn't make sense, because I was told nothing would sync anymore since my iCloud storage is full).

I don't know how recently I have backed up my phone; I usually just back up pictures.
I'm using an iPhone 5 with iOS 7.1.1

I desperately need to recover this note, any help would be wonderful.