Wireless Customer Agreement - Supplemental
Terms and Conditions for

"AT&T" or "we" or "our" refers to AT&T Mobility LLC, acting on behalf of its FCC-licensed affiliates doing business as AT&T. "You" or "your" refers to the person that is the customer of record.

THESE SUPPLEMENTAL TERMS AND CONDITIONS ARE INTENDED TO SUPPLEMENT, AND ARE PART OF AND INCORPORATED INTO, YOUR WIRELESS CUSTOMER AGREEMENT WITH AT&T. PLEASE READ THESE SUPPLEMENTAL TERMS AND CONDITIONS CAREFULLY TO ENSURE THAT YOU UNDERSTAND EACH PROVISION. Your Wireless Customer Agreement, as supplemented by these Supplemental Terms, makes up the complete agreement between you and AT&T and supersedes any and all prior agreements and understandings relating to AT&T Satellite Augmented Mobile Service ("SAM").

1. SAM Description. SAM enables satellite voice and data communications as described below (collectively, "Satellite Service"). For the avoidance of doubt, the Satellite Service is a "Service" for purposes of your Wireless Customer Agreement.

1.1 Availability. SAM provides roaming access to a satellite network owned and operated by TerreStar Networks Inc. ("TerreStar") when coverage is not available on the AT&T wireless network or on the networks of other wireless carriers in the United States, Puerto Rico and U.S. Virgin Islands with whom AT&T has cellular wireless roaming agreements. The Satellite Service is only available in the United States (including Alaska, Hawaii and coastal waters), Puerto Rico, and the US Virgin Islands within the operating range of TerreStar's satellite system ("Satellite Service Areas"). A SAM coverage map is available at http://www.terrestar.com/coverage. The SAM coverage map denotes (a) "primary" Satellite Service Areas (i.e., the continental United States and coastal waters) where SAM-compatible devices can access the satellite network without additional antennas, and (b) "secondary" Satellite Service Areas (i.e., Hawaii, Alaska, Puerto Rico and the U.S. Virgin Islands) where an additional external device antenna, sold separately, is required or recommended to access the satellite signal. Gaps in Satellite Service coverage may occur within the Satellite Service Area shown on the SAM coverage map, which, by its nature, is only an approximation of actual coverage.

1.2 SAM Requirements. SAM requires a compatible TerreStar Genus™ dual mode (cellular and satellite) smartphone (the "SAM Equipment"). Charges for SAM include, without limitation, (a) a monthly recurring charge for access to the TerreStar satellite network (the "SAM Subscription") and (b) applicable per-minute voice usage charges, per-message SMS charges and per-megabyte data usage charges for the Satellite Service. You must also have and maintain an eligible voice plan and an eligible tiered pricing data plan for use of the AT&T wireless network. The SAM Equipment, SAM Subscription and associated Satellite Service charges are not eligible for any corporate discounts or other benefits.

1.3 Usage and Availability Limitations. In order to minimize unintended satellite roaming charges and maximize battery life, the SAM Equipment defaults to the AT&T wireless network. To use Satellite Service, you must first activate the satellite receiver in the SAM Equipment; switching between the AT&T wireless network and the TerreStar satellite network will not happen automatically. Cellular wireless calls and/or data sessions must be completed prior to switching to the satellite network or they will be dropped. Availability of Satellite Service, quality of coverage, and access to services while roaming on TerreStar's satellite network are not guaranteed. Many AT&T wireless products and features, including without limitation Push to Talk and Video Share, are not compatible with the Satellite Service and/or the SAM Equipment. Satellite Service is intended for backup wireless connectivity only; it is not suitable for, among other things, primary wireless connectivity, two-way video (or other uses that involve the transmission of large amounts of data), or emergency or mission-critical communications. The use of the SAM Solution as a fixed satellite service (stationary installation) is expressly prohibited.

1.4 Additional Conditions, Restrictions and Limitations. To use the Satellite Service, the SAM Equipment must have an unobstructed line of sight to the TerreStar satellite. Satellite Service is not available indoors or in vehicles with a covered canopy/roof. When outdoors, clouds or precipitation will generally not materially affect the Satellite Service, but buildings, terrain, foliage or other solid objects (including thick glass or wire mesh) may block direct line of sight to the satellite. Satellite Service is also subject to satellite capacity limitations, satellite repairs and other maintenance activity, suspected fraud, abuse or misuse of the satellite network, and other Service limitations and disclaimers set forth elsewhere in the Agreement. Satellite Service is also subject to latency issues. Establishing a connection to the TerreStar satellite network may take several minutes, depending on satellite signal strength, system capacity limitations, and whether the called party is using a satellite, wireline or cellular network, as well as their geographical location and roaming status. Voice and data connections will experience approximately 250 milliseconds (1/4 second) of latency each way when communicating to a cellular or wireline-connected server or device and approximately 500 milliseconds (1/2 second) of latency each way when communicating between two satellite devices due to the distance between the end user and the satellite. Data speeds when using the TerreStar satellite network will be substantially slower than those typically available on the AT&T cellular wireless network.

2. Policies and Processes. You must follow the policies and processes established by AT&T to activate, migrate to and from, or terminate SAM and purchase SAM Equipment, as such policies and processes may be modified from time to time. YOU ARE REQUIRED TO MAINTAIN BOTH AN ACTIVE SAM SUBSCRIPTION AND ACTIVE SUBSCRIPTIONS TO THE REQUIRED VOICE AND DATA PLANS AS LONG AS SAM IS AVAILABLE FROM AT&T. If it is determined that you are using the SAM Equipment without the SAM Subscription and/or a required plan, AT&T reserves the right to add the SAM Subscription and/or plan to your account and bill you for the appropriate monthly fee. If you wish to permanently deactivate the SAM Subscription, you will be required to migrate your voice and data service (and any add-on cellular features) to a device that is not SAM Equipment.

3. Miscellaneous.

3.1 Invoices. Billing of satellite roaming charges for the Satellite Service may be delayed up to three billing cycles due to reporting between TerreStar and AT&T. Pay-per-use charges associated with the satellite network are presented on a customer bill as roaming charges (identified as "satellite"). Satellite usage is billed in full-minute and full-megabyte increments, and actual usage is rounded up to the next full increment at the end of each call or data session for billing purposes. Satellite pay-per-use rates include domestic and international long distance. Satellite calling and messaging may not be available to all countries. AT&T may block certain categories of numbers (e.g., select international destinations) at its sole discretion.

3.2 Third-Party Beneficiary. You acknowledge and agree that TerreStar is an intended third-party beneficiary of all SAM Solution-related terms and conditions in your Wireless Customer Agreement (including, without limitation, these Supplemental Terms and the limitation of liability and disclaimer of warranty provisions set forth elsewhere in your Wireless Customer Agreement).

3.3 Discontinuation of the SAM Solution. AT&T may discontinue providing the SAM Solution at any time without notice.