Which is the best app to charge credit cards for Andriods or IPhones?

Long story short, I do part time per schedule work as a Firearms instructor and specialize teaching women how to defend themselves. I don't advertise that much as it is mostly weekend work which averages out to about 16 to 20 instructor hours I log each month depending on the time of year.

The issue is that half the time I go to a gun range to train a small group of clients, a few other ladies ask if they can join the class or if they can take a class right after I'm finished with my clients. Since I don't have a full flown business I work on a cash basis, but 90% of the time the would be 'new immediate clients' intend to pay with a credit card and don't have the cash on them, which means that many decide to reschedule for a later date. So I figure it's time to get an app to charge credit cards. Having heard some horror stories that certain apps are not reliable I figured it would be smart to ask someone with experience in these things.

I have an Android and an IPhone but not much else in terms of business charging equipment. So which apps do you recommend and what type of accounts do I have to set up? Can you link them to a personal checking account or do you need a special merchant account?

Possible to fix side damage on iPhone?

I once put my phone on my jacket on the basketball court, then when picked up the jacket my phone flew and landed on the concrete, bouncing several times. When I picked it up the screen was gone and the camera and everything else worked fine. But there was a huge chipped part on the top of my phone, right next to the power button. There was a huge crack on it. Is it possible to fix it at all?

Water damaged IPhone 5s! Been in rice 24hours?

It looked much better after being in the rice but now I'm noticing moisture behind the screen. It's like it's creeping in slowly. Is there anything I can do to prevent this getting worse until I can afford to get it fixed?

When will the future get here?

I was a huge science fiction kid growing up. In the 1990s I was bombarded by messages about how we were going to live life in the future. Sadly to say its 2010s everything dosent look that fantastic. Sure iPhones and computers are cool. But the world and everything else is the same. Where are all the hover cars, the moon colonies, the robots, the food pills, the Ray guns, etc. They said this would be the future at least from 1950s Sci Fi authors. What happened?

Every time I open a photo the effect goes away

I have an iPhone 5c. Lately my phone has been glitching out.-. Okay so every time I open the photos app and then click the photo, the effect goes away:/ usually I have the effect thing on chrome. And before I click the photo and I'm just in phot album, you can see how it has the effect but when I tap the actual photo, the effect goes away? I already tried resetting my phone by pressing the lock and home button at the same time?

My iphone 4 went into recovery mode?

As bad as this sounds, my life revolves around this phone. I have two jobs, one where I'm a manager and I need to be in contact with my employees and the other is for photographers and during one of our weddings I was setting up a shot with my camera, i exited the app, pressed the hold/wake button on the top of the phone and put it in my pocket. Moments later, without hurting the phone at all, I noticed the phone wouldn't turn on at all. I remembered leaving the house around nine thirty with 100% battery life and it was around noon. There was no way the phone should have died without warning me. When I went home afterwards I hopped on my PC, plugged it in to charge the phone (just to see if the battery failed) and nothing happened. I uninstalled and reinstalled the newest version of iTunes. (this phone wasn't currently hooked up to it) and an error pops up saying my phone was unrecognized and in recovery mode and for iTunes to recognize it, it needed to be reset. After much thought, I resolved to reset and recover any lost information. However when I went to reset through iTunes, it then said (after five minutes of going through the entire process) that it couldn't be reset. I'm not comfortable downloading anything besides apple approved stuff due to problems in the past. Please any assistance would be greatly appreciated… Thanks for the time

Iphone 4s Won't Let Old Songs Play?

So here's the problem, on my Itunes account, all my songs are there, no songs erased, and everthing is playing fine, but for some reason on my Iphone, some of the songs won't play, counted about 26. Some of these songs were downloaded weeks ago, and a couple are not from Itunes, so it can't be a Icloud problem.

It also shows this at the bottom when I scroll down, it's been there for about 30 min.