| CellIdentityCdma | CellIdentity is to represent a unique CDMA cell |
| CellIdentityGsm | CellIdentity to represent a unique GSM cell |
| CellIdentityLte | CellIdentity is to represent a unique LTE cell |
| CellIdentityWcdma | CellIdentity to represent a unique UMTS cell |
| CellInfo | Immutable cell information from a point in time. |
| CellInfoCdma | Immutable cell information from a point in time. |
| CellInfoGsm | Immutable cell information from a point in time. |
| CellInfoLte | Immutable cell information from a point in time. |
| CellInfoWcdma | Immutable cell information from a point in time. |
| CellLocation | Abstract class that represents the location of the device. |
| CellSignalStrength | Abstract base class for cell phone signal strength related information. |
| CellSignalStrengthCdma | LTE signal strength related information. |
| CellSignalStrengthGsm | GSM signal strength related information. |
| CellSignalStrengthLte | LTE signal strength related information. |
| CellSignalStrengthWcdma | Wcdma signal strength related information. |
| NeighboringCellInfo | Represents the neighboring cell information, including Received Signal Strength and Cell ID location. |
| PhoneNumberFormattingTextWatcher | Watches a TextView and if a phone number is entered
will format it. |
| PhoneNumberUtils | Various utilities for dealing with phone number strings. |
| PhoneStateListener | A listener class for monitoring changes in specific telephony states on the device, including service state, signal strength, message waiting indicator (voicemail), and others. |
| ServiceState | Contains phone state and service related information. |
| SignalStrength | Contains phone signal strength related information. |
| SmsManager | Manages SMS operations such as sending data, text, and pdu SMS messages. |
| SmsMessage | A Short Message Service message. |
| SmsMessage.SubmitPdu | |
| TelephonyManager | Provides access to information about the telephony services on the device. |
| SmsMessage.MessageClass | SMS Class enumeration. |