Roamly Mobile has developed an overlay SIM card that inserts between a subscriber's home SIM card and phone. The overlay SIM works with Roamly's provisioning platform to automatically provision optimal carrier profiles based on the user's location, allowing seamless roaming. When outside their home country, the overlay SIM activates and connects to a partner carrier, then deactivates when the user returns home. This solution requires only one installation and provides roaming services transparently to subscribers around the world.

1. ROAMLY MOBILE SOLUTIONS – OVERVIEW
October 17, 2013
Confidential & Strictly Private
Roamly Mobile Solutions
100 York Blvd. Suite 600
Toronto, ON L4B 1J8
Canada
Roamly Mobile Solutions – Overlay SIM
Roamly Mobile has built a proprietary roaming solution consisting of two key elements:
1. Overlay SIM Card
a. Roamly has developed a micro-thin SIM card that is inserted in-between a subcribers Home
SIM Card and phone. The current hardware supports Mini, Micro and Nano SIM form
factors.
2. OTA Provisioning Platform
a. Roamly has built an end-to-end Provisioning Platform combining software on the overlay
SIM card with billing and signaling interconnections between multiple carrier partners.
b. The Provisioning Platform allows Roamly to provision SIM Profiles (IMSI, KI, MSISDN, APN
Settings, PLMN List) to a user over the air based on their location.
c. Roamly has developed both the provisioning system and the software on the SIM card in-
house.
The combined system above allows the provisioning of any SIM profile based on a subsribers location.
All of these steps are transparent to the subscriber. This platform is powered with the Roamware multi-
IMSI Hub (billing + signaling platform) to provide localized roaming services.
How it Works
1. Subscriber attaches Overlay SIM to Home SIM Card and inserts into phone
2. SIM Card automatically installs and runs through the SAT menu. There are no apps to download.
3. The Overlay SIM is dormant when the subscriber is in their home country (ie. on the Home SIM
card network)
4. When the subscriber leaves the home network, the Overlay SIM activates and signals the
Provsioning platform its location information.
5. Based on the location of the user, the Provisioning Platform allocates the optimal profile (Carrier
Partner IMSI/MSISDN). For example, when a China Telecom subscriber using the overlay, travels
outside of China, our provisioning platform would enable the AT&T IMSI for the country set in
which AT&T would like to provide service. This process is transparent to the user and currently
takes about 30 seconds upon arriving in a new country.
6. Once enabled, the subscriber is able to utilize AT&T services for voice, SMS and data.
a. There are multiple billing configurations available to support this service
7. When the customer returns to their home country, the SIM card returns to its Home Provider.

2. Benefits of the Overlay SIM
1. Requires only one installation – User can keep overlay in their phone forever and it will work
everytime they travel
2. Roamly transparently sets automatic call-forwarding to allow users to receive calls on their home
number
3. MNO subscriber acquisition tool outside of home market. AT&T could leverage its strong roaming
rates in countries outside of North America to provide service. For example, AT&T could provide
China Telecom users with service in Europe (AT&T would have no acquisition or support costs
related to this customer. The customer wouldn’t even be utilizing the AT&T network).
4. MNO subscriber acquisition tool inside of home market. AT&T could sell product to T-Mobile
targeting specific offerings (reduced business hour or data specific offerings)
5. Integration with Roamware
a. Carrier-Grade signaling and billing solution with in-depth flexibility
6. Provisioning Platform can be used across any SIM based UICC device
a. Machine to Machine (ereaders, automobiles, etc.)
b. Embedded SIM devices
7. Utilizes standard network registration and authentication protocls (Milenage, Comp128v3, etc.)
8. Most flexible and automated Multi-IMSI SIM MGMT System available for Roaming with
compatibilty across:
a. Majority of GSM phones
b. Majority of Operating Systems
c. Multiple Generations of SIM Cards (2G, 3G, 4G)
Roamly Capabilities and Architecture
1. Roamly Provisioning Platform (Backend for communicating with OSIM/SIM)
2. Roamly Monitoring Platform (Backend for monitoring card activities)
3. Roamly Resource Management Platform (DID, MSISDN, IMSI allocation rules and logic)
4. Device Management Platform (Phone and Home carrier specific settings management)
5. Proprietary partner carrier APIs and Interfaces, including
a. Subscription Lifecycle APIs (IMSI and MSISDN provisioning and management)
b. Subscriber Activity APIs (Non-standard Location Updates (LU), etc)
6. Self-Service Customer Portal (Top-Up, View Balance, Usage History, Payment Settings, etc.)
7. Currently Developed, but will be outsourced as do not represent core competency
a. Billing Platform
b. Signalling Platform
c. Subscriber Communication Platform
d. Archiving Platform
8. Incoming Call Routing via DID providers to Roamly Media Gateway/Class 4 Switch
9. Call Termination while working with carriers to provide least cost routes