Phenix City in the United States generally has a comfortable environment for solo female travelers. However, it's always necessary to take basic precautions in any new city. The place is fairly safe during the day, but it's advisable to avoid certain areas at night. Most locals are friendly and willing to help, but don't hesitate to contact local authorities in case of any discomfort or emergency. You should also keep your valuables safe and avoid drawing unnecessary attention to yourself.