Filed under: Cellphones, WirelessSee, it's not all dour news in the wireless industry -- oft-overlooked carrier Alltel just announced that it added over 1M gross wireless customers in the first quarter, and that it's committed to LTE in the next three to five years. The LTE news isn't particularly surprising, since Alltel's got roaming agreements to maintain and both Verizon and AT&T are committed to LTE