| CarrierConfigManager | Provides access to telephony configuration values that are carrier-specific. | 
| 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 | Signal strength related information. | 
| CellSignalStrengthGsm | GSM signal strength related information. | 
| CellSignalStrengthLte | LTE signal strength related information. | 
| CellSignalStrengthWcdma | Wcdma signal strength related information. | 
| IccOpenLogicalChannelResponse | 
          Response to the iccOpenLogicalChannel(String) command. 
          
    
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| 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. 
          
    
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| 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 | |
| SubscriptionInfo | A Parcelable class for Subscription Information. | 
| SubscriptionManager | SubscriptionManager is the application interface to SubscriptionController and provides information about the current Telephony Subscriptions. | 
| SubscriptionManager.OnSubscriptionsChangedListener | 
          A listener class for monitoring changes to SubscriptionInfo records. 
          
    
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| TelephonyManager | Provides access to information about the telephony services on the device. | 
| SmsMessage.MessageClass | SMS Class enumeration. |