Support for devices without telephony enabled

[vinayvenu]

Context

Many devices are disabled from using Avni because they don't have telephony enabled. However, most Avni use-cases do not require telephony.

Acceptance criteria

As a user of a device without telephony enabled, when I search for Avni on the playstore, I need to be able to find and install it.

[himeshr]

As per documentation, https://developer.android.com/guide/topics/manifest/uses-permission-element, android:required="false" has to be set in .

[himeshr]

For this entry,

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

There is a warning about following:

Caution: If your app targets Android 5.0 (API level 21) or higher and uses the ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION permission to receive location updates from the network or a GPS, respectively, you must also explicitly declare that your app uses the android.hardware.location.network or android.hardware.location.gps hardware features.

---

For this entry,

 <uses-permission android:name="android.hardware.telephony" android:required="false"/>

The value android:name="android.hardware.telephony" might not be accepted, as it refers to a Implied feature requirement and not a type of Permission.
See https://developer.android.com/guide/topics/manifest/uses-feature-element#permissions-features
and https://developer.android.com/reference/android/Manifest.permission#CALL_PHONE

[vinayvenu]