Overall, my experience with ATT was less than stellar. This is only my experience, and I'm sure this is not typical. However, I will say the root of all the issues I experienced was due to poor training. It is a web-based training platform and my trainer seemed out of sorts and disorganized. You will need to make sure you pay close attention and reach out to peers for support. If working in a retail store expect to work every weekend for the foreseeable future. Some AT&T retail stores are unionized and scheduling is based on seniority. AT&T will often promote "top" sales people into management regardless of managerial skills. It will be a mixed bag of sorts with the type of leadership you will interact with. Also, this job is NOT for thin-skinned individuals. Customers will harras and belittle you for seemingly minuscule issues.
If you apply yourself and possess the right attitude you can make a decent living and the benefits are excellent. Regular spiffs and bonuses are paid in addition to commissions and great discounts.
Good pay, excellent benefits, decent culture.
Work/Life balance - Verbal abuse from customers.