- Why am i charged for GlobalSMS when i did not send an SMS overseas(Iphone Users)?

We wish to highlight that this is a common charge incurred by iphone users. The explanation is provided as follows:
iPhone users may be charged by Apple for activation request* sent to Apple Servers (in UK) each time you:
 - Turn on/off iMessage function
- Turn on/off FaceTime function
- Insert SIM card into iPhone (each removal/insertion of SIM will trigger request for iMessage)
*Activation request is sent via GlobalSMS @$0.60/sms to Apple Servers; including but not limited to the following UK numbers:-

447937985220
447937985221
447937985222
447937985223
447937985224
447937985225
447937985226
447937985227
447937985228
447937985229
447537410205
447537410225
447537410245
447537410265
447537410285
 
You may refer to Apple Support at https://support.apple.com/en-ph/HT201349 for more details.