Short answer
The person's identity, marital status, employment, residence status and general background should be independently verified.
Islamic Guidance
What Islam teaches
Islam encourages honesty and prohibits deception. Important information affecting marriage should not be deliberately concealed.
Practical Guidance
What you can consider
Verify claims through reliable documents and trusted references rather than relying solely on photographs or promises.
Sources
Qur'an 33:70; Qur'an 49:6.