You have started at least five threads on this general topic in the last month. If you're not having success with the myriad of cards it seems that you've tried, you might want to find a forum or two that deal with the wireless cards themselves, as you've likely exhausted the information that is available here.
From what I can tell, you've already tried at least:
- MC7700
- MC8780
- Gobi 3000 (MC8355 in Lenovo channel)
- Gobi 2000
- broodMobi BM806U-E1
- Unknown device in MR6400 Openwrt Sim ready and registered but not connected
- Unknown device in [SOLVED] Tplink mr6400 - 3g/4g sim interface