Galaxy S4 sales will top 20M in Q2 and 80M by year's end, estimates RBC, citing checks indicating strong U.S. demand. If Samsung (SSNLF.PK) pulls that off, it would be on its way to hitting its target of 100M lifetime sales. RBC also expects industry smartphone sales to rise 27% this year to 870M, and 20% in 2014 to 1B+. Meanwhile, a Russian site reports Samsung's June 20 London event will reveal the Galaxy S4 Zoom, a 4.3" phone sporting a 16MP camera with a 10x optical zoom, and the Galaxy S4 Active, a water/dust-proof S4 variant sporting a Qualcomm (QCOM) Snapdragon 600 CPU. Samsung's just-launched S4 Mini uses a Snapdragon 400. Other S4 suppliers: PANL, SYNA, ATML, RFMD, BRCM, ANAD, SWKS, TQNT.