Jambo! Don Mueang is Bangkok's low-cost hub and where most island hops start. Install a JamboSim eSIM before you fly and land already connected.
Free Wi-Fi is time-limited, so data is safer for ride apps, metered taxi queues and onward flight changes.
The A1 bus links to BTS Mo Chit, and the SRT Dark Red Line train reaches Bang Sue in about 20 minutes.
DMK has Terminal 1 for international and Terminal 2 for domestic flights. Local time is ICT (UTC+7).
Budget airlines hub
Yes, your phone joins a Thai network right after landing.
Yes, coverage spans Thailand including Phuket, Samui and Krabi.
Install before departure and activate on arrival.