IMSI...what is it?International Mobile Subscriber Identity or IMSI /ˈɪmziː/ is used to identify the user of a mobile network and is unique

•It is sent by the phone to the network for transfer of information and is stored as a 64 bit field.• •It also gets information and details from the network onto the mobile via a HLR (Home Location Register) when on its own network or is copied when roaming

•IMSI’s are a 15 digit long number, but can be shorter:– MTN South Africa's old IMSIs are 14

First 3 digits are the mobile country code (MCC), Then it’s the mobile network code (MNC), either 2 digits EU or or 3 digits US Finally you have the mobile subscription identification number (MSIN)

IMSI:404685505601234MCC404IndiaMNC68MTNLDelhiMSIN5505601234

IMSI:310150123456789MCC310USAMNC150AT&TMobilityMSIN123456789

IMSI:4600013511078690MCC460CHINAMNC00CMCCMSIN13511078690

IMSI:470010181566423MCC470BangladeshMNC01GrameenphoneMSIN0181566423

What do the Numbers Mean?

Check your IMSI

https://www.numberingplans.com/?page=analysis&sub=imsinr

This application allows subscribers to make use of two or more lines (IMSI numbers) without having to purchase more than one SIM Card.

For example the subscriber can hold a business IMSI and a personal IMSI on the same SIM Card, or this feature also allows prepaid/ postpaid swapping features on a single SIM card. 

ADVANTAGES:

•It could prevent subscribers from having a personal SIM Card with one network and a business SIM Card with another network or vice versa.  •The network Operator could for example offer subscribers a multi IMSI card which will keep all the subscriber’s business (both personal and business) within their own network.•Subscribers would only need to purchase one phone whilst still having the luxury of having two IMSI numbers.•Roaming costs could be reduced as partner networks (preferential rates) could be selected

Dual/Multi IMSI

Single IMSI V Multi IMSI

• Domestic Mobile Network Operators (MNO) usually provide Single Network SIM cards (aka Single-IMSI).

• A Single Network GSM Connectivity service allows to connect to a single network per country.

• BUT…depending on the national and international roaming agreements, the same SIM cards may be able to connect to multiple MNOs when roaming in a different country or even at the original country (e.g., Free Mobile subscribers can connect to the O2 network in United Kingdom ).

The Joint IMSI Solution UK and PAKSTAN SIM

The Joint IMSI is a revolutionary technology enabling mobile operators to allow their subscribers to use their own local SIM card anywhere between the UK and Pakistan for less then regular tariffs cost  

•Multiple IMSI - UK and Pakistan mobile operators on one SIM.

•Travellers just need to turn their mobiles on and our system will automatically select the available IMSI having the lowest rate for this destination.

•Once connected to the designated network, subscribers will be able to roam at reduced rates! With either numbers of Pakistan number or UKCustomers will enjoy the widest network and coverage of two countries in the world

Benefits for Mobile Operators & Users

• UK and Pakistan number on same SIM• Offer attractive package to both networks – EG: prepaid subscribers at

almost local rates in both countries without roaming charges while subscribers are travelling

• Widen coverage for subscribers for both network • Increase your traffic by attracting your competitors subscribers • All UK Tourist traffic be on you network while staying in Pakistan (Approx

over 500000 people travelling from Briton to Pakistan every year • Even local subscribers be more exited to have UK number on their Pakistan

network SIM • Extra revenue can be generated by fix fee per month for having both

number on same SIM • Increase extra subscribers on your network having both IMSI

Top Up’s

• Can be used in both countries • Can be billed against UK IMSI (topped up in the UK)

and used in both countries (balances switched)• Can have the options to have two top account UK &

Pakistan • If one runs out of credit, as long as the other one has

credit it will still work..

Business User Benefits

•When in the UK: subscribers will use UK IMSI

•When in Pakistan: switch to Pakistan IMSI

•If any caller make call from Pakistan or from UK to call Pakistan number (IMSI) then subscribers in UK or in Pakistan will be able to answer from either number from either countries

•Business’ can have a signature UK number, to expand their business internationally

•More business subscribers on your network

Benefits of Multi IMSI• Coverage. Access to multiple Pakistan and United Kingdom networks

increases the overall network coverage within the regions that they operate 

• Redundancy. Multi-IMSI SIM cards increase the redundancy of the network at multiple levels (e.g. radio access, operator interconnection and core network). If for some reason, one operator or one subscription fails, the SIM card will try and connect through other operators and using other subscriptions.

• Quality. A Multi-IMSI SIM card can more easily be steered to connect to a different network, • For example if current network has an unusual high latency

forwarding traffic, has bandwidth issues or is throttling traffic (e.g., network overloaded due to a local promotion to its subscribers), the Joint-IMSI SIM card can be configured over the air to connect to an alternative network.

The Cost Benefits….

• Multiple subscriptions (i.e., IMSIs), mean the ability to be configured to use the IMSIs that provide a lower cost and that cost savings can be transferred from the operator providing the SIM card to its customer.

• This lowers the cost compared the users domestic GSM provider.