Bandar Lampung is relatively safe for solo female travelers, but it's important to always exercise caution whatever the destination. The city is generally welcoming and has a low crime rate, but petty theft like pickpocketing can happen, especially in crowded places. It's advisable to not flash valuable possessions and always be aware of your surroundings. While the locals are generally friendly, keep in mind that it is a traditional society, so it's best to respect their customs and dress modestly.