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Why does Android-getallcellinfo always return a list?

Why does Android-getallcellinfo always return a list?

I’m using Android API 24… After experimenting a bit, it seems that running the method updateCellInfo – described below – always returns a list where it’s first index corresponds to device’s last SIM slot, and it’s last index corresponds to device’s first SIM slot. Can anybody confirm this? Is this correlation plausible?

How to register listener in telephonymanager in Android?

Applications can also register a listener to receive notification of telephony state changes. You do not instantiate this class directly; instead, you retrieve a reference to an instance through Context.getSystemService (Context.TELEPHONY_SERVICE) . Note that access to some telephony information is permission-protected.

How to find the registered operator of a cell phone?

Returns the MMS user agent profile URL. Returns the MMS user agent. Returns the neighboring cell information of the device. Returns the ISO country code equivalent of the current registered operator’s MCC (Mobile Country Code). Returns the numeric name (MCC+MNC) of current registered operator.

How to return device ID for GSM phone?

Returns the unique device ID, for example, the IMEI for GSM and the MEID or ESN for CDMA phones. Returns the software version number for the device, for example, the IMEI/SV for GSM phones. Returns the Group Identifier Level1 for a GSM phone. Returns the phone number string for line 1, for example, the MSISDN for a GSM phone.

Why does Android getallcellinfo always return null?

I’m new to android, and I work on a project that goes to collect all cells information that observed by phone. I have used TelephonyManager.getAllCellInfo () method, but it always returns null.

Is there a solution to getallcellinfo ( ) function?

I have got the solution of my question. that’s replaced getAllCellInfo () function by getNeighboringCellInfo () function, although I am running with android level 17 that should be support getAllCellInfo () function and getNeighboringCellInfo () function should be no longer supported. Anyway, the following is the solution.

Applications can also register a listener to receive notification of telephony state changes. You do not instantiate this class directly; instead, you retrieve a reference to an instance through Context.getSystemService (Context.TELEPHONY_SERVICE) . Note that access to some telephony information is permission-protected.

Returns the MMS user agent profile URL. Returns the MMS user agent. Returns the neighboring cell information of the device. Returns the ISO country code equivalent of the current registered operator’s MCC (Mobile Country Code). Returns the numeric name (MCC+MNC) of current registered operator.

I have got the solution of my question. that’s replaced getAllCellInfo () function by getNeighboringCellInfo () function, although I am running with android level 17 that should be support getAllCellInfo () function and getNeighboringCellInfo () function should be no longer supported. Anyway, the following is the solution.

Is the contactsprovider obsolete in Android 10?

The guide about ContactsProvider contains a notice describing the specific fields and methods that are obsolete on all devices starting in Android 10. On devices that run Android 10 or higher, the system transmits randomized MAC addresses by default.

How does access fine location work in Android 10?

If a user grants your app access to device location – either ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION – then upgrades their device from Android 9 to Android 10, the system automatically updates the set of location-based permissions granted to your app.

I’m using Android API 24… After experimenting a bit, it seems that running the method updateCellInfo – described below – always returns a list where it’s first index corresponds to device’s last SIM slot, and it’s last index corresponds to device’s first SIM slot. Can anybody confirm this? Is this correlation plausible?

What can I do with telephonymanager in Android?

With TelephonyManager the telephony services of a device can be accessed and with the method TelephonyManager.listen(PhoneStateListener listener, int events) all information the telephone is receiving can be monitored.

The guide about ContactsProvider contains a notice describing the specific fields and methods that are obsolete on all devices starting in Android 10. On devices that run Android 10 or higher, the system transmits randomized MAC addresses by default.

When to declare access _ background _ location in Android 10?

If your app creates and monitors geofences and targets Android 10 (API level 29) or higher, you must declare the ACCESS_BACKGROUND_LOCATION permission. If your app runs on Android 10 or higher but targets Android 9 (API level 28) or lower, the platform applies the following behavior: