4 SIM / USIM / ISIM support GSM Ph.2 – R98R99 – Rel-4Rel-5 – Rel-7Rel-8 -> GSM phoneUMTS 3G phoneIP MultimediaSAE GSM phase 2 Mandatory SIM No USIM support Optional GPRS (R97 ->) WCDMA or EDGE Mandatory SIM USIM support is: Mandatory for WCDMA Optional for GSM/EDGE IMS Mandatory USIM No SIM specs Optional support of legacy SIM ISIM support mandatory for IMS ME WLAN (Rel-6) SAE USIM mandatory for SAE access 3G AKA security SIM access not allowed any more No need to update legacy USIM IMC as alternative to ISIM for non- 3GPP access ???
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