Browse Prior Art Database

DUAL SIM BLOCK Disclosure Number: IPCOM000004788D
Original Publication Date: 2001-May-22
Included in the Prior Art Database: 2001-May-22
Document File: 2 page(s) / 81K

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Hoe Sei Sing: AUTHOR [+1]



This text was extracted from a WORD97 document.
This is the abbreviated version, containing approximately 100% of the total text.


Hoe Sei Sing Tan Chee Boon


There is a need for two SIM cards (or smart cards) to be concurrently inserted into a portable telephone. Either of the two SIM cards can, for example, be selected to allow for separate billings between personal and business calls. The concurrent insertion and selective use of two SIM or smart cards on a portable telephone allows for over the air and internet banking as well as other useful transactions. Unfortunately, in order to accommodate two SIM cards, portable telephones typically have two separate SIM card holders which inherently increase the size of the portable telephone.


Referring to Figure 1, there is illustrated a dual SIM card holder that can accommodate two SIM cards. The SIM card holder is in the form of a SIM block that can be surface mounted onto a Printed Circuit Board.. In use, a user places SIM cards into the block such that they abut each other in a back to back fashion. If only a single operable SIM card is inserted then a dummy card can be also inserted. Alternatively, the spring contacts in the block can be configured to have sufficient resilience and protrude a sufficient distance to allow operative engagement when a single operable SIM card is inserted

The SIM block provides for space saving and also reduces the number of parts required for the accommodation of two SIM cards. The SIM block can be easily surface mounted during manufacturing.