Phuc Truong, managing director of Mobext, explains that tracking on cellphones is difficult because cookies don't always work on them.
Mobext公司的经理董事张庭福（PhucTruong）解释说，追踪手机相对困难，因为cookies技术不一定对每台手机都有效。
Phuc Truong, managing director of Mobext, explains that tracking on cellphones is difficult because cookies don't always work on them.
Mobext公司的经理董事张庭福（PhucTruong）解释说，追踪手机相对困难，因为cookies技术不一定对每台手机都有效。
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