Can Android users participate in iMessage/iPhone group chats?

So my friends and I like to have group texts on our iPhones. The thing is, it's time for my upgrade and I was thinking of making the switch to Android since the GS4 is currently free, while the 5s is currently $200. I do not want to wait for the iPhone 6. So I was wondering if Android users could participate in group chats when everybody else is using iPhones. The other reason I was going to get a GS4 is because my best friend is getting the S5 since his S3 broke recently and we could send stuff to each other with S Beam.

Random text messages to unknown numbers?

My iphone has been off all day, from about 7am to 4pm and i turned it back on, i looked in my text messages and i see a text that "I" sent to some number i've never even seen before. There was no answer from that number but its just the fact that my phone has been off all day and plus i have a password lock on it so its impossible that i or anyone else in my house did it, is this some kind of virus? Also to mention i've been getting repeated calls over and over for the past few weeks from different numbers and different states all over the country

Is there anything better than Spotify (free)?

I like Spotify (free) but I feel like I would have to be Premium to really enjoy it properly? Especially on iOS.

So yeah, is there a free service better than Spotify or is Spotify (premium) really unbeatable? I really like iTunes but I don't want to fill up my space with albums etc when there's streaming services out there…

Can anyone maybe tell me some hidden gems of the music streaming world? Perhaps with an offline feature/app as well for my iPhone?

Upgrading to iPhone 5s issues?

So my dad just got me the iPhone 5s. I had the 5c before. I Logged into my iCloud and App Store but only 125 pictures downloaded, only to my photo stream not camera roll. I have way more, maybe 500. But also, as I said before I logged into my App Store too but none of my apps downloaded again. I'm pretty angry about this because I have a music app that downloads music for free and I don't want to have to re download everything again. And not to mention losing my place in some games. Also, all my contacts are gone! Someone help please!

Why is my iPhone 5s acting weird?

So just recently my iPhone has been acting up. Every time I listen to music Siri will always pop up when I didn't do anything. It will always pause randomly. Then it will always skip to a new song or it'll skip really fast through the song. My phone is only four months old and it just started doing all of this and it's only when I listen to music other than it's fine?

Will my iPhone still work without a sims card?

We're flying over seas to Dominican. And my dad is paranoid about costs because we paid a lot last time.

He wants to take the sims card outta our iPhone.
Can we still take and save pics?
And we use txtig apps when connected to internet?
Can I use email when connected?
With no cost and data off

My Iphone 4s will not connect to my laptop

This may be very confusing but here it goes. I have not had a chance to put pictures or music from my phone onto my laptop for about 4 months. The last time I transferred anything was in April. Well, a few days ago I decided it was time to back my phone up to my laptop because I'm supposed to be getting an Iphone 5c. When I plugged the cord into the usb port it made the sound that indicated it knew something was there but NOTHING on my computer picks up that my phone is there. My phone won't even charge. Well I tried shutting the computer down and restarting it but it still didn't work. So I plugged it into my family desktop. The itunes and everything picked it up but, of course it wouldn't let me put music on it because that was not the main computer. (It wanted me to erase what was on it to reconnect it to that computer. Understandable) So I decided I'd just forget it and try it again later. I have a USB drive I use for school. I plugged that into my laptop and it picked it up fine. I transferred pictures onto it also. I tried the phone. It done the same thing it did a few days ago. It made the sound but nothing showed up. I'm not sure if I accidentally deleted some needed software or if my phone is just messed up. I really, really, really would love some help. Does anyone know what might be going on or why it's doing this? (not really sure if this helps but my computer is an Hp Pavilion that runs off of Windows 8.)