iMessage and facetime not displaying my number

I have an iPhone 5 running iOS 7.1.2, I recently turned off the iMessage and FaceTime and then ejected my SIM card and inserted SIM card of another network. After few hours I again switched my SIM again to previous network.

After that I am trying to activate my iMessage and FaceTime but no luck. It is not displaying my number in address. I checked my number in Phone but there my number is correct.

I have tried network reset, phone reset, hard reset, turning on and off both services but no luck. How do I go back to using FaceTime and iMessage on my original network?

Myriad of (relatively minor) issues on my rMBP in the last few days

Not sure how to generalize this, but my rMBP 15" 2014 has started having several weird issues in the past few days:

• Typing freezes (briefly) in Notes


• Searching “Keychain” from spotlight returns some results but NOT “Keychain Access”


• Xcode stops building files because “too many open files on system”, fixed by restart


• Mail autocomplete doesn’t work -> Restart Mail, freezes on open -> Restart again, same -> Open Internet Accounts in System Prefs, freezes -> Restart computer, works


• Beachball opening folder from Dock -> Downloads (about 10 seconds)

None of these issues seems to stay for long. For example, if I search Spotlight for "Keychain" now, it returns the correct result.

More info, I'm running 10.10.1, 16gb RAM, my 500gb hard drive is about 2/5 free. I clean installed Yosemite about 6 months ago too.

Does anyone know this might be? Hardware issue, like failing motherboard or something? Or (hopefully) some kind of software bug?

Terminal support

I am using my iPhone5 which is jailbreak and I had installed terminal using Cydia but whenever I am going to hack wifi using terminal and air crack the terminal give me an error illegal instruction 4 plz help me

Navigate Finder Sidebar using arrow keys Yosemite

Is there a way I can navigate the sidebar items using arrow keys? I am using Yosemite.

Thanks

Dena

Is it possible to permanently disable firefox fullscreen feature?

My iMac is an old model, the first one to have a Core2Duo chip and it only gets to Snow Leopard.

Since Firefox 32, it always (or most of the time) starts in fullscreen and it's really annoying. Is there a way to disable it for good?

Thunderbolt to HDMI (Not DisplayPort to HDMI)

My first question is do Thunderbolt to HDMI adapters exist? The reason I'm specifying Thunderbolt and not DisplayPort is because I have a Belkin Thunderbolt2 Dock. If I use a MDP>HDMI adapter and the HDMI port on the unit, only one display works. However, after borrowing my friend's Elgato Thunderbolt dock and connecting it to the TB port on the Belkin dock, I could use the HDMI port on each dock on both monitors, no issue.

I would hate to have to buy two docks to set up my docked setup, but I could if I absolutely have to. The reason I want this to work is because I have a HengeDock for my laptop, and the HDMI port is inaccessible from the dock since it points upright.

Worst case, I guess I could get another DP to HDMI adapter, but that would occupy my other thunderbolt port, and my TB external does not have a daisy chain connector.

iPhone - How to set up not requiring passcode if recently closed

I have an iPhone with iOS 8. Is there a way to setup my phone where it doesn't require a passcode to unlock if it has been closed in the last 5 (or some amount) minutes?

I know that my computer has a 15min feature.

Thanks