This usual happens una po irostore sim [ especial this model and its siblings ] . hua inapoteza certificates zote .. what are certificates .. ? its some kind of a policy / restricting feature ambayo inaruhuhusu installations of apps only approved by manufacturer .. [ for more please
Google .. ]
Now do this and your phone itapata uwezo wa kuinstall app yoyote ..
1 . Download the file I have attached below or
here
2 . Extract utakuta folder lililopakiwa list ya all certificates zinazohitajika na sim yako ..
3 . this files are compiled in some tiny .der extensions.. Nokia default browser for some reason haitambui mafail ya aina iyo .. [
your model .. Duno about others ]
4 . Download OxyCube only kuanzia Version 4.5 and above .. all other version below hazisupport X2-01 nokia toys .
Here is the Link
5 . Fanya Installation then run it .. Plug your X2-01 . then on the top left bar click on
Run Connection Wizard . run the wizard with instruction mpaka umalize kuconnect sim yako
6 . With your phone connected go to select ( Top left corner ya OxyCube ) .. then File Browser , then hidden browser - > certificates -> User { Copy all the certificates here } then restart your phone ..
Install app unayotaka ..
😎
Kama huon hidden browser .. from the program go to tools -> option [located on top left bar ] navigate to file browser -> then tick show hidden files and folders
Hope I helped ..