IPhone not getting some texts?

At least I don't think it is. I'm not sure if it is my phone not receiving texts or the sender's phone not sending texts. A week or two ago, I had someone text me and ask me a question only to find I didn't get the original text from her, but since then I haven't had any problems like this until a few days ago whenever someone asked why I had not texted them back even though I did. Then, the problem seemed to be fixed so I figured it was the sender's phone. But then, the same problem happened yesterday and I told the last message I sent to this sender and he said he replied but I didn't get his response. The problem with it seems to be only from this one person, so I'm not sure if it's my phone or his. If it is my phone, how can I fix this problem? It's very irritating. I reset the phone by holding down the sleep/wake button and the home button, but i'm not sure if that helps at all. Is there a way to fix it without restoring my iPhone?

IPhone 4 glass. Repair it myself or send it in?

Time came today when I dropped my iPhone 4. Cracked the screen pretty bad. So my question is should I buy a replacement kit for around $30 and try to do it myself? Or send it into Mission Repair (I've had good work with them) for $100 and have them do it? I feel like I will mess something up on my iPhone if I do it. But then if I don't do it, I'll have to wait for it to ship, fix it, and then send it back and also be out $100.

Music library manager for Mac? ALTERNATIVE TO ITUNES?

I never really used iTunes because I just used my phone and Frostwire (then deleted the frostwire songs from my old computer to get back space. They stayed on my iPhone)

Now I have a new MacBook Pro and over 80% of my music didn't show up in iTunes.

I want a music library manager that is not iTunes.

Text in Cuba using data roaming?

Basically I'm going on holiday to Cuba in 3 days and I have a up led iPhone and on 3 network and was wondering what would be the best way of using Internet or texting Over there

Should I get a Droid or an iPhone? - 1

I want to get a smartphone. I'm already changing carriers from at&t to verizon. I'm not going to use the smartphone for business etc. I'm just using it as a phone as I'm in high school. I have friends that have own both and they say that technically droid is better but it is harder to use. Is this true? Based on quality, speed, and convenience, which should I get? Money is not a problem.

How to tell if someone received and read my text messages?

So I have an iPhone 4 and Verizon #G is my carrier so I'm wondering how can I tell if someone has received and read my text. Mostly everyone gets my texts but there's rare occasions when they don't(specifically one person but i don't know what phone and carrier they have).Is there a certain setting on my iPhone that I can use or do I just sit, wait, and hope that they are just slow repliers? I hate sending the same thing or a message twice because I hate seeming annoying and desperate. I'm texting this girl who is really beautiful and she has a tendency to be a slow texter but she didn't get my first text but that was fixed. I texted her early this morning after our convo.last night and she hasn't replied yet, but I know she's on Facebook but I don't wanna pester and look desperate:/