Well, all of the engineer in the repair store which are ran by HUAWEI don’t have the permissions to use the hot-wind gun to heat your motherboard to get the broken SIM card reader out and replace the new one. When they know your motherboard has something wrong, they just want to replace the broken thing. And they think your motherboard is broken, then they want to replace is. But I think they can also get your motherboard out of your phone, use the tweezers to get the Sim card out and bring it back. Maybe it would failed but it is a choice. If they successed to get it out, maybe you just need to give them USD20 (20 UNITED STATS DOLLARS) for that.