IPhone SE is dropping calls so bad?

I just got the new iPhone. My old iPhone rarely would break up or drop calls. Every call I've made today has been breaking up and going in and out. What can I do to fix this? Just paid 500 for this phone and it's doing this… Ugh

How to allow twitter to access my photos?

I recently updated to IOS 6 and the next time I tried to upload a photo twitter asked if it was allowed to access my photos I accidentally clicked no and now whenever I try to upload a photo the message comes up telling me to update my privacy settings so that twitter can access my photos. I have been through my privacy settings and I can't seem to find anything that solves the problem? Any ideas?

How to remove a person from the background of a photo on the iPhone?

I took a picture of a sculpture and it all came out great except there's one person right next to it. I want to use the picture since it came out well, but the random person kind of disrupts it. The background is also a bit complicated (check LACMAS Urban Lights) so I can't just cut the person out and replace it with a solid color. If anyone finds a way to do this without purchasing photoshop and on the iPhone instead, that would be really helpful!

How to add an international number to my iphone?

So, this guy I have been talking to for a while lives in germany, and we've been talking on facebook, but since I'm not on it all the time, we don't talk as often as we would both like. So, I got whatsapp, and I have NO idea how to add his number to my phone.

His number looks a little something like this, or well this is what he sent me via facebook(not his real number but still)
0256/58945602
I typed it in my phone pretty much like that, and tried to go to my whatsapp to try to contact him, but it won't work. Apparently, he's already messaged me and I have yet to receive the message,
I'm so lost.