u/Curious_Cat_314159

Disclaimer: Techno-dinosaur here. Forgive me if the question is not appropriate for this subreddit. Please LMK.

Just installed Polar Flow on my Samsung Galaxy S23 (Android). When I tried to sign in (I believe my existing Polar Beat / online Polar Flow login should work), I get an error to the effect: "cookies are disabled / enable cookies".

According to Google A(rtificial) I(ncompetence), that means I should enable third-party cookies in my browser (!), which is Chrome.

But Chrome Settings says that third-party cookies are enabled (!).

Can someone kindly (please be kind) help me get past this problem and get started with PF?

TIA

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Edit.... I wrote:

>that means I should enable third-party cookies in my browser (!), which is Chrome

And I when click the 3-dot icon, the menu says "running in Chrome".

But Google AI confirms my expectations: "Apps on the Samsung Galaxy S23 run natively on the device, not in a web browser like Chrome".

So, that seems to be my problem: somehow I installed a Chrome app (?) instead of phone app (?).

(FYI, in the Play Store, I selected "polar flow app".)

Perhaps I need to speak with tech support for my phone. But I'm still hoping someone here can offer some guidance.

Disclaimer: Forgive me if this has been discussed ad nauseam. I haven't been tracking this subreddit closely.

Is it reasonably safe now to update H10 firmware?

That is, have the installation and use of the latest update been relatively worry-free?

I am always wary of updates for fear of introducing new defects. I depend on these products almost daily.

Case in point: PB for Android version 3.5.12 (5/7/26) was followed just 5 days later with version 3.5.13 (5/12/26) to fix "a bug causing the app to crash".

Coming so closely together, I wonder if the new bug was introduced by the changes in 3.5.12.

(Oh, I see that I am now using PB version 3.5.13 (!). It must have updated automagically and silently. I did notice a change in behavior just recently. Now I know why. Klunk!)

I haven't updated H10 firmware since the paired releases 4.0.4 and 4.1.10 (12/4/25). And even then, I waited until Feb, when I was troubleshooting some (unrelated) problems.

I've been ignoring PB prompts to update for quite a while -- probably since Mar 4 (!), the release of H10 version 4.2.0.

I don't believe I have had any issues with the H10. "Don't fix what ain't broke".

OTOH, I'm getting tired of having to by-pass the update prompt.

Disclaimer: I know next to nothing about Bluetooth tech. So I might misuse the terminology.

According to Medtronic documentation, my Medtronic MCL (MyCareLink) phone app uses BLE to connect to my Medtronic ICD/pacemaker.

But I do not see the ICD in the list of paired Bluetooth devices on my phone.

Moreover, I never consciously paired the phone (app) to the ICD.

However, the pairing (if any) might have been done automagically when I log into MCL app -- which itself is done automagically, at least after the first use after installation.

So, my naive questions are....

1. Is it possible that the MCL app (or phone) is not paired with the ICD?

2. If so, does that limit my use of other Bluetooth devices on the same phone, which might or might not be paired with their devices?

In particular, can I use a Polar H10, which also uses BLE and which does appear in the paired-device list?

3. Or if the ICD is paired automagically, how do I confirm that on my Samsung Galaxy S23 phone? As I noted, I do not see the ICD after completing a Bluetooth scan on the phone, even while the MCL app is running.

4. Finally, assuming the ICD is indeed not paired, is there some benefit to pairing it? And how might I accomplish the pairing?

According to the app set-up instructions in the MCL user guide, "the pairing process may take up to 6 minutes". But it does not give step-by-step instructions for initiating the pairing process, other than after installation, "follow instructions to connect your heart device" and "create a password". I presume I did that (long ago).

OTOH, according to the FAQ in the MCL user guide, "before using a second mobile device [e.g. to allow MCL tracking on a caregiver's phone], you have to pair your first mobile device". Why would it say that if I have to pair the "first" (only) mobile device, in the first place?

Aside.... I should be able to ask Medtronic these questions. But (a) I cannot get through to their support staff; and (b) I'm not confident that they would understand the questions and provide accurate answers. Arguably, I'm taking the risk by posting to this forum. TBD.

EXACTLY how much HR data can the H10 store offline?

I'm sure that question has been asked and "answered" many times over. But I am finding ambiguous information.

First, I am surprised that I cannot find that answer in the H10 User Manual ( https://support.polar.com/e_manuals/h10-heart-rate-sensor/polar-h10-user-manual-english/manual.pdf ).

(Can you?)

But according to https://support.polar.com/us-en/how_long_a_training_session_can_i_record_with_h10 : "H10 records HR data once per second and the training session can have data up to +30 hours".

What is the significance of the plus sign ( + )?

Is that exactly 30 hours; i.e. 108,000 HR values (30 * 3600)? If so, why not write simply 30 hours?

Or is that approximately 30 hours; i.e. 30+ hours, as Google A(rtificial) I(ncompetence) interprets it? If so, what is the exact number of HR values?

Or why can it be only approximate; i.e. variable? What does it depend on?