Multiple T-Mobile subscribers report that promised monthly device credits disappeared—sometimes near the end of a 24‑month device financing term—causing sudden bill increases. One customer said credits stopped after 22 months, adding $80/month for two months; after escalating, T‑Mobile reimbursed $160. Another customer who bought three phones through Costco said he only received one monthly device credit and was repeatedly told the others would start on later bills. The takea