How to change tumblr description?

I want to know how to change my tumblr description, by mobile, on the iPhone 4, I don't know if its possible. If it is can you please help.

Can you use an iphone without a sim?

I received a second hand iphone 3 but the sim card holder is a bit dodgy and will not go in. I have ordered a new one but i'm wondering if i can set the iphone up without a sim in it, I can't seem to get past the bit after you sort your wi-fi out.
Thanks

Added (1). @Roger That's what i'm trying to do but i can't get past the installation

Can you use an iphone without a sim? - 1

I received a second hand iphone 3 but the sim card holder is a bit dodgy and will not go in. I have ordered a new one but i'm wondering if i can set the iphone up without a sim in it, I can't seem to get past the bit after you sort your wi-fi out.

Is ''Iphone'' software only or hardware and software?

I've never had an Iphone. I always see it anounced in an absolutely black device, such as this one:
http://pective.com/m/iphone-5

I wonder whether, when you're going to buy one, you go to the apple store and buy the whole thing,
or look for a Nokia or Sony smartphone and then go to the Apple website and buy and download the software into your device.

How to transfer all my music and album art onto my new IPhone 5?

I just got a new IPhone 5 and i just wanted to know how to i transfer all my music and playlists onto my new phone. I want to transfer the music from my IPhone 4 to 5. If i back up my whole IPhone does that include music? Also i have lots of album art will that be saved under the backup?

My iMessage is not working on my iphone 5?

I have recently had a problem with iMessage, where it would have all the correct boxes tick etc, but when i went to sen them to people, it would only go as a normal message, My first though was that the iMessage server may be down, but no as other people were able to use, However I wasn't and people couldn't use it to contact me. I found a solution in turning imessage off and rebooting, however this lasted about 20 hours before going back to message, my service is fine, and so i tried my solution again, and again it worked, but for half an hour, and now every time i try this sollution it lasts a matter of seconds, Please help!

What's are good apps (iPhone) that track our sleeping cycle?

I want to find an app that helps me see when I'm in deep or light sleep, or even awake. I have downloaded many apps (free) but some are a little silly and ony work when I use the alarm. The alarm is good, but I'm on holiday and I want to see my sleeping pattern but I have to use an alarm. Does anyone know any good apps that show that but doesn't need an alarm? Even if I have to buy it. Please show the ranking of stars you give it and tell me why it's worth buying. Thank you in advance! Please answer As soon as possible.

How to put iphone videos back onto the iphone?

I took some videos with my phone, and I wanted them to be in a different folder so I transferred the videos to the folders where itunes takes my pictures from and puts them on the phone and then removed them from my phone. When I went to watch them, they were not in the phone. I still want to be able to share them with friends via text messages, so how do I get these video files back to the phone? It is an iPhone 4, thanks!

Wait for the iphone 5s or get the galaxy s4 next month?

So I really need a new phone but I'm conflicted on which one to get because I don't want to wait really but if the iphone is better I'd rather wait plus I like the aps store a million times more then the andriod market, but other then that I don't know much about the iphone 5s and I have tmobile and they just switched to no contract plans all around for everything with no upgrade. So I'd have to buy the iphone 5s full price unless they changed that. I just looked and they are offering the galaxy s4 for 150. I already asked this but nobody gave me any reasons why I should choose either one