Not receiving verification codes on your phone is typically caused by issues such as poor network connectivity, incorrect phone number entry, blocked or filtered SMS messages, or delays from the service provider. Problems can also arise if your SIM card is inactive, your phone has message filtering enabled, or your carrier restricts certain types of automated messages. Additionally, international messaging limitations, full inbox storage, or app-specific restrictions may prevent delivery. Identifying whether the issue is device-related, network-based, or service-side is key to resolving it and restoring access to accounts that rely on secure authentication.

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