Answer
(Fatwa: 745/632=B/1429)
You should put on Ihram before Meeqaat and do tawaf after reaching Makkah Mukarramah. After that, carry out sa?ee between Safa and Marwa and shave your head. Now, you will put off your ihram. This very method will be carried out in case you travel by plane.
If you have intention to stay there for fifteen days, then you should perform the full salah otherwise you will have to do qasr.
You can use mobile if you need it.
The best and sunnah way for performing Umrah is what has been mentioned above. Doing as much tawaf as possible is best thing during Umrah.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband