A couple things. First of all, the elaborate fabrication you're talking about is possible with all kinds of evidence, not just cell phone records. You could go around leaving misleading physical clues. You could take photographs that have an intentionally mis-set clock in the background. You could bribe or intimidate people into lying on the stand. etc. etc.
Second of all, the kind of fabrication you're describing is much more difficult to pull off than you realize. There are lots of different kinds of evidence and you would have to have some serious foresight to fabricate it all in a way that is consistent. For example, here's a case of someone who took a lot of effort to fabricate evidence of a rape against an ex-boyfriend. She did such a convincing job that he was jailed for a while, but eventually the truth came out.
http://articles.latimes.com/2011/jun/26/local/la-me-accused-...
Most criminals (or false accusers) don't have nearly this level of planning. The defendant in my case was actually a really smart guy, and had spun a story that cleverly was corroborated by the cell phone records of his accuser. But he was caught in a trap when his own cell phone records showed calls that the other phone didn't show. And he had had weeks to create this false story.
Framing someone (or hiding your crimes) is harder than it sounds. In most cases, the simplest explanation is the right one.
Second of all, the kind of fabrication you're describing is much more difficult to pull off than you realize. There are lots of different kinds of evidence and you would have to have some serious foresight to fabricate it all in a way that is consistent. For example, here's a case of someone who took a lot of effort to fabricate evidence of a rape against an ex-boyfriend. She did such a convincing job that he was jailed for a while, but eventually the truth came out.
http://articles.latimes.com/2011/jun/26/local/la-me-accused-...
Most criminals (or false accusers) don't have nearly this level of planning. The defendant in my case was actually a really smart guy, and had spun a story that cleverly was corroborated by the cell phone records of his accuser. But he was caught in a trap when his own cell phone records showed calls that the other phone didn't show. And he had had weeks to create this false story.
Framing someone (or hiding your crimes) is harder than it sounds. In most cases, the simplest explanation is the right one.