Can I update to android from iOS - Android Cell Phones

First difference is the extenion of file
ios -- . ipa
android --. apk

and second difference is iOS apps run on Objective-C / Swift, while Android apps run on Java

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Yes, there is, only if there is an update for the specific device, like Android or iOS xD

This is a common question that bored a lot of people who change their Android phone to an iPhone. As we know, it can be very simple to transfer contacts and photos, but it's much harder to transfer text messages.

I followed this tutorial when I was searching an answer to the same question you asked here. And hopefully, it did help me transfer all my text messages to iPhone.

How to Transfer Text Messages from Android to iPhone 4 5 6

Tested devices: Samsung Galaxy S5 & iPhone 6S

What app are you trying to update? Is it on android or ios? If android then try making some space in the internal storage and if possible please give more details.

depends on the Apple iPad model you have:
For the iPad first generation (A1219) before iOS 5 to update is only possible with connecting the device to iTunes on a computer. Plug it into your computer and open up itunes under devices click on your ipad and then click on check for update.
- but this model supports only iOS 5 !
- NO iOS 6/7/8 !
for all other models:
There are two ways to update the iOS version of your iPhone, iPad, or iPod Touch - via connecting the device to iTunes on a computer
- or directly from within the device, but only since iOS 5 it is possible to update the iOS version without the need to connect the iOS device to a computer (over-the-air update)
just go to: settings - general - software update

go to samsung sales point, and ask the problenm to samsung sels promoter, they will given to you batter solution

there is an iOS emulator called 'Cycada' which let you run some iOS Apps on a newer Android phone....
- however I recommend to switch to a real iPhone....
Cycada Native Execution of iOS Apps on Android