[Q] Installing Duplicate Skype / Multiple Instances Skype topic

Before you say it, YES, I've looked at the many other threads in this forum, stockoverflow, and other sites, all explaining the process of how you have to decompile the application APK file and change the package name in the manifest, then sign and install onto your phone. I was able to successfully do it on another application (application wouldn't run but it installed at least XD), but, I can't seem to get it to work on the Skype application. When I try to install the APK of my modified versions, the install just fails, with no error message to go off. I've tried on the latest version as of today, and I simply can't get it to work at all.

Is there anyone who has tried doing this already with Skype and had success? (If so, share your apk!)

Is there a reason why Skype specifically doesn't work? Or am I missing something?

I'd really appreciate feedback on this, I've ripped my hair out all day trying to do this and it just won't work. If anyone has anything which might help I'd greatly appreciate it. I simply wish to run 2 (or more would better) instances of the Skype application at once.

[Q] skype calling topic

i'm planning to buy an lg g pad 8.3 and will be using it sometimes with skype, how is the microphone ? any issues?

[Q] front mic ok for skype, not for calls. why!? topic

(also posted in MotoX forum but it's a general question for any android phone expert - it seems like a software problem but i think it's hardware or too low-level that new rom unlikely to solve - any suggestions are welcome, please :)

Got a new 1st gen Moto X from Hong Kong via eBay, it's an XT1058 - US AT&T unlocked and I'm using it in the UK on Three network.
The front mic works 100% fine for skype, just not for normal calls - sometimes works after clearing the cache partition, sometimes not - mostly have about 10% volume and keeps dropping/cutting out.

Trying to work out whether it's definitely just software problem that could be fixed by rooting and replacing the system version which is latest 4.4.4 provided by AT&T or if it's likely hardware and I'm better off exchanging phone?
Could it be incompatibility between stock AT&T apps and UK-THREE network?
Anyone got evidence of sellers retailing faulty batches cheaply? It was damn cheap.
I thought after a few cache cleans, reboots, switch between ART and dalvik it was ok but after installing some apps problem reappeared.
After factory reset... problem still there... after wiping cache partition... it's good for a minute then same problem... but skype works fine!
Any suggestions of next troubleshooting steps? Worth trying a different network SIM or waste of time?
If someone could suggest how such a problem might be hardware or software-related I'd really appreciate it.

[Q] 1st gen: front mic ok for skype, not for calls topic

Got a new 1st gen Moto X from Hong Kong via eBay, it's an XT1058 - US AT&T unlocked and I'm using it in the UK on Three network.
The front mic works 100% fine for skype, just not for normal calls - sometimes works after clearing the cache partition, sometimes not - mostly have about 10% volume and keeps dropping/cutting out.

Trying to work out whether it's definitely just software problem that could be fixed by rooting and replacing the system version which is latest 4.4.4 provided by AT&T or if it's likely hardware and I'm better off exchanging phone?
Could it be incompatibility between stock AT&T apps and UK-THREE network?
Anyone got evidence of sellers retailing faulty batches cheaply? It was damn cheap.
I thought after a few cache cleans, reboots, switch between ART and dalvik it was ok but after installing some apps problem reappeared.
After factory reset... problem still there... after wiping cache partition... it's good for a minute then same problem... but skype works fine!
Any suggestions of next troubleshooting steps? Worth trying a different network SIM or waste of time?
If someone could suggest how such a problem might be hardware or software I'd really appreciate it.