According to forum posts, Penang offers various public transport options including buses and taxis. The 204 bus is noted for its route to Penang Hill and is an economical choice at around 2 ringgit, although exact fare is required as no change is given. Taxis and the Grab e-hailing service are also popular, with Grab being particularly recommended for its fixed pricing and safety features.

Travelers have called out Grab as a must-have app for transportation in Penang, suggesting it for both ease of use and cost-effectiveness. The service provides a reliable and affordable way to navigate the island, including trips to major attractions and the airport.

Some users mentioned the ferry service as an operational mode of transport between the mainland and Penang Island. This service is highlighted as a viable option, especially for those looking to avoid traffic or for a scenic route.

Some travelers mentioned that SIM cards can be purchased at Penang International Airport upon arrival. Notable stores like Celcom Bluecube and Maxis are available, typically closing around 10 pm to 11 pm. However, it's important to note that you should bring your passport, as it is required for purchase.

According to forum posts, an alternative option is to pre-arrange a SIM card for collection at the airport through services like Klook. This can often include a discount compared to on-the-spot purchases.

For those arriving late or preferring to buy a SIM card within the city, major telecom providers like Digi are widely available at various locations, including convenience stores like 7 Eleven and shopping malls throughout George Town.