Android Phone Storage Full due to APKs My OnePlus Two has 64GB Internal Storage and no SD card. 
It shows Phone Storage Full warning. When I investigated, I saw below stats and am unable to free space. 

Settings > Storage &amp; Memory > Storage &amp; USB 
Internal Storage 53.62 GB Used of 54.00 GB 

Break Up 


  Apps &nbsp;&nbsp;&nbsp;&nbsp; 14.00 GB
  Images &nbsp; 565 MB
  Videos &nbsp;&nbsp; 8.00 KB
  Audio &nbsp;&nbsp;&nbsp; 44.00 KB
  Other &nbsp;&nbsp;&nbsp;&nbsp; 38.94 GB
  Cached Data &nbsp; 3.64 MB


I clicked "Others". Next, "Explore" > "File Manager" > "Categories" > "Phone Storage" > "Storage Information". 


  Images &nbsp; 170.57 MB
  Audio &nbsp;&nbsp;&nbsp;&nbsp; 1.98 GB
  Video &nbsp;&nbsp;&nbsp;&nbsp; 1.02 GB
  Others &nbsp;&nbsp; 14.9 GB
  Archives &nbsp; 538.09 KB
  Apks &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 35.46 GB
  Documents &nbsp; 117.16 MB
  Available &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 339.48 MB


When I check "apks", I see several apks for each app (which are presently installed or were installed in past). It looks like on each update of the apps, the apk file for each update in present on my phone. 

I have tried some uninstalling apps but that does not remove all apks. I still see several apks for each app which I uninstall. 

Example of apk names. 

Facebook_140.0.0.24.91.apk  86.2 MB 
Facebook_141.0.0.31.91.apk  86.2 MB 
Facebook_136.0.0.22.91.apk  82.37 MB 
Facebook_135.0.0.22.90.apk  81.79 MB 
Facebook_130.0.0.45.70.apk  81.77 MB 
Facebook_134.0.0.25.91.apk  80.69 MB 
Facebook_132.0.0.20.85.apk  80.55 MB 
Facebook_131.0.0.32.69.apk  79.53 MB 
:: 
:: 
Facebook_114.0.0.20.70.apk  69.49 MB


Similarly for each other app on my phone. 

OxygenOS version 3.5.8
Android Version 6.0.1
Android Security Patch Level March 1, 2017
Kernel Version 3.10.84-perf+
OnePlus@ubuntu-56 #1
Mon Mar 13 11:40:18 CST 2017
Build Number ONE A2003_24_170313  

Please help. Any solution other than phone reset ?
After an apk is installed it can be deleted from a file manager and you keep your apps/games.