Huawei Mate 7 - Why Is the Number of Contacts Saved to the SIM Card Less than the Number of Contacts Copied from My Phone

Huawei Mate7 Smartphone
FAQs 6 Calls and contacts
Issue 01 (2014-09-04) Huawei
Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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The figures are for your reference only. The actual screens may vary.
6.10 Why is the number of contacts saved to the SIM card
less than the number of contacts copied from my phone?
When your phone copies contacts from your phone storage to a SIM card, it automatically
merges duplicate contacts with the same names and phone numbers.