Alcatel A30 PLUS - Cannot Send and Receive MMS; SIM Card PIN Locked; Cannot Connect Phone to Computer; Cannot Download New Files

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ŎMake sure that you are in a place with network coverage for cellular
data or Wi-Fi internet connection.
ŎTry connecting at a later time or another location.
Invalid SIM card
ŎMake sure that the SIM card has been correctly inserted (see
"Inserting or removing the SIM card").
ŎMake sure that the chip on your SIM card is not damaged.
ŎMake sure that the service of your SIM card matches the network
you’re on.
My phone can't make outgoing calls
ŎMake sure that you have dialed a valid number and have touched
Call on your phone.
ŎFor international calls, check the country and area codes.
ŎMake sure that your phone is connected to a network, and the
network is not overloaded or unavailable.
ŎCheck your subscription status with your carrier.
ŎMake sure that you have not barred outgoing calls.
ŎMake sure that your phone is not in airplane mode.
My phone can't receive incoming calls
ŎMake sure that your phone is switched on and connected to a
network.
ŎCheck for overloaded or unavailable network.
ŎCheck your subscription status with your carrier.
ŎMake sure that you have not forwarded incoming calls.
ŎMake sure that you have not barred certain calls.
ŎMake sure that your phone is not in airplane mode.
The caller’s name/number doesn't appear when a call is received
ŎCheck that you have subscribed Caller ID service with your carrier.
ŎYour caller may have concealed his name or number.
I can't find my contacts
ŎMake sure that your SIM card is not broken.
ŎMake sure that your SIM card is inserted properly.
ŎImport all contacts stored in SIM card to phone.
The sound quality of the calls is poor
ŎAdjust the volume during a call by pressing the Volume key.
ŎCheck the network strength. Move to a location with stronger signal
strength.
ŎMake sure that the receiver, connector or speaker on your phone is
clean.
I can't use the features described in the manual
ŎCheck with your carrier to make sure that your subscription includes
this service.
ŎMake sure that this feature doesn't require any additional accessory.
When I select a number from my contacts, the number can't be dialed
ŎMake sure that you have correctly recorded the number in your file.
ŎMake sure that you have selected the country code when calling an
international number.
I can't add a contact
ŎMake sure that your SIM card contact list are not full; delete some
files or save the files to the phone.
My callers can't leave messages on my voicemail
ŎContact your network carrier to check service availability.
ŎSet up your voicemail with your carrier, so that your caller can leave
a message.
I can't access my voicemail
ŎMake sure that your carrier’s voicemail number is correctly entered
in "Voicemail number".
ŎTry later if the network is busy.