Is the another budget basic phone with PTT feature, a type of successor phones, the Samsung Convoy 2 SCH-U660 seems to be the successor of the original Samsung Convoy SCH-U640 that was released by Verizon since Nov 2009 as a rugged phone with military spec design.
Samsung Convoy 2 Specs:
Networks : CDMA 20001x, EvDo Rev. A
Bands : CDMA 800, 1900 Mhz
Display : 2.2 Inches
Battery :
Dimensions : 2.01” x 3.89” x 0.85” Weight : 3.9 oz
PTT : Ready
Download manual in PDF for Samsung Convoy 2 - Codename : SCH-U660CNAVZW
Copy link below and paste in your browser adress bar.
http://downloadcenter.samsung.com/content/UM/201107/20110730081516042/VZW_SCH-u660_English_User_Manual.pdf
