The previous thread closed before I was able to post this, so I'm bringing it over to this thread. Apologies for the long post.
Yes - Oscar-I'll-try-not-to-lie-Pistorius stated that he didn't look in Reeva's handbag when he retrieved it for the paramedics. During testimony, he hadn't been asked if he'd looked in her purse, so there was no reason for him to offer that curious bit of unsolicited information. Many of us here were taken aback when he said that and some compared it a child who announces "I didn't do it!" before they're even confronted with questions or blamed for a misdeed.
I, too, think he may have planted his 2nd (business) phone in the bathroom. According to phone logs, that phone hadn't been used to call Netcare that morning, so there was no reason for it to be on the bathroom floor.
Oddly enough, as we have learned, the one phone that he'd used after the shooting mysteriously disappeared from the crime scene.
If Reeva's phone was the one that was later found by Van Staden (crime scene photographer) beneath the bloody towels, I wonder if OP had gone upstairs to retrieve it, along with his personal phone, to remove it from the crime scene, as well. If so, he may not have been able to find it because it was covered by the towels.
On a side note, I don't believe OP's claim that he tried to call for an ambulance from Reeva's phone (but couldn't because he didn't know the passcode). As many other astute posters have pointed out - if that were true, why was his very first call (from his own phone) made to Stander, and not for an ambulance? If his primary concern was to phone for an ambulance, I think that would have been his first call from his phone - not a call to estate manager Stander.
IMO, OP's phone was smuggled from the crime scene due to his possible ignorance regarding technology and information retrieval. I think he believed that he could delete everything from his phone and that would be that (just as some criminals erroneously believe that deleted computer history takes care of any incriminating evidence).
I have no doubt that OP didn't want those incriminating whatsapp text messages between he and Reeva to be discovered, as they revealed that all was not well in paradise - not to mention that he had sent Reeva that text regarding the Tasha's restaurant incident.
We know he didn't go upstairs to wash up right after Dr. Stipp arrived, because OP testified that he later asked a police officer if he could wash up because he said the smell of the blood was making him ill.
I think OP went upstairs shortly after Dr. Stipp arrived so that he could retrieve his phone and possibly also Reeva's phone. If so, I think he was unable to find Reeva's phone because it may have been the phone that was buried beneath the bloody towels.
IMO, OP was in cover-up mode from the moment he called Stander, to when he told Baba "Everything is fine" to when he saw Stander, Clarice, Baba, another security guard, and then Dr. Stipp in his foyer/on his doorstep when he told them he thought Reeva was an intruder and shot her by mistake.
I think he was in cover-up mode during that unexplained trip upstairs immediately after Dr. Stipp said there was nothing more he (Stipp) could do for Reeva.
OP claimed that he sat with Reeva for 5 minutes in the toilet closet crying. But after a doctor told him there was nothing more that could be done he immediately left Reeva's side to go upstairs??? IMO, that was the time to sit with Reeva crying - but he didn't.
IMO, he disappeared upstairs while he had the chance before the police arrived, because he knew that once police were on the scene, he wouldn't be let out of their sight, let alone be allowed to return upstairs unaccompanied.
IMO his behaviour after the event was 'calculated', not consistent with being in 'shock' at discovering such a tragic, devastating accident had occurred.