That's right, anyone with enough of technical knowledge or for that matter armed with the right software can always recover the lost messages on your iPhone and that does not sound like a very good thing.
Taasi waa xaq, qof kasta oo ku filan oo ah aqoon farsamo ama arrintan ku hubeysan software saxda ah mar walba soo kaban karto Fariimaha lumay ee aad iPhone iyo in aanu ka dhawaajin sida wax aad u wanaagsan.