Local people in Bandung are generally friendly and helpful, and even though many of them are strong believers of Islam, only a few (minority) do practice "fundamental ways". For women (perhaps also for men) travelers, it is advisable to dress properly in order to avoid unnecessary attention. Click "Tips - Indonesia" on the left menu or here for more matters on Clothing in Indonesia.
You might also experience a few greetings on streets, especially from local kids or people who might try to make conversation with you. Somehow they also laugh or smile a lot, probably almost in every conversation, so do not take it wrongly as if they are laughing at you because something is funny or wrong.
Should you like to develop and print your photos, there are many photo services in Bandung. Generally locals go to either Kodak or Fuji shops. Processing time depends on the numbers of prints, but usually it takes around one hour or less for a set of photos, and costs about Rp. 1,500 for one print/paper.
Although Bandung is considered as a safe place to visit, as probably in many other big cities in the world, there are a few areas in which you have to pay extra attention to your belongings, such as your camera, mobile phone, wallet, bag and so on. One known area where you should be extra cautious is around Bandung main mosque (Alun-alun), where it is advisable to be more vigilant for pickpockets. Unless you are using your camera, you'd better keep it safely. As common advice, if you are walking in a crowded area, also make sure that your backpack is securely closed/locked, and put your wallet, mobile phone or other important items you might carry with you while touring around the city, in secure places.
A few locals also suggest avoiding walking alone at night, especially after 9pm, along Jalan Braga, around Alun-alun, and Pasar Baru.
Police across Indonesia (and in Bandung itself) are changing towards giving better public service standards. However, changing the old habits (and public perception) is not easy and takes time. They have been doing many things to improve public perception. For instance, renewing a driving license in the past took a few hours and would make people end up paying a lot more, but today it can be done almost instantly without extra charges.
For more general information and tips on Indonesia please click here: "General Information" and "Tips".