AT&T and Verizon have raised the cost of some monthly and older mobile plans, testing consumer budgets; T-Mobile has kept most rates flat (Drew FitzGerald/Wall Street Journal)

Drew FitzGerald / Wall Street Journal:
AT&T and Verizon have raised the cost of some monthly and older mobile plans, testing consumer budgets; T-Mobile has kept most rates flat  —  Wireless companies are boosting monthly fees and increasing the cost of mostly older cellphone plans  —  This summer will test whether Americans …