We use the indices maintained by the stardict-sanskrit project (See: https://github.com/sanskrit-coders/stardict-sanskrit , https://sites.google.com/site/sanskritcode/ ). [If you want to contribute new dictionaries to the stardict-sanskrit project or code to this app, that is welcome too - visit sites above.] Short-link to this app: bit.ly/SanskritStarDictUpdater
Note: Our indexes allow for the following languages to be installed: Sanskrit, pALi, kannaDa, hindI, telugu
Report / solve issues, look at known problems here: https://github.com/sanskrit-coders/stardict-dictionary-updater/issues . PS: If this app does not work on your old phone for some reason, consider alternatives presented here - https://sites.google.com/site/sanskritcode/ (but do report the failure).
जय हनुमान्। श्रीरामो जयतेतमाम्।